Address PR review: SetClipboardData leak, GPO UI binding, version patching

- Fix SetClipboardData memory leak: free hMem on failure (dllmain.cpp)
- Add GPO-aware IsEnabled bindings to CopyAsUNC SettingsCard/ToggleSwitch
  following the same pattern as other File Explorer add-on toggles
- Add CopyAsUNC AppxManifest to versionSetting.ps1 so sparse package
  version is patched during release builds

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

.github/actions/spell-check/expect.txt

@@ -791,10 +791,11 @@ inetcpl
 Infobar
 INFOEXAMPLE
 Infotip
+INFOW
+initialfile
 INITCOMMONCONTROLSEX
 INITDIALOG
 INITGUID
-initialfile
 INITTOLOGFONTSTRUCT
 INLINEPREFIX
 inlines
@@ -2107,7 +2108,7 @@ WNDCLASSEXW
 WNDCLASSW
 wndproc
 wnode
-wom
+WNet
 WORKSPACESEDITOR
 WORKSPACESLAUNCHER
 WORKSPACESSNAPSHOTTOOL
@@ -2165,4 +2166,455 @@ Zoneszonabletester
 Zoomin
 zoomit
 ZOOMITX
+AAAAs
+ABORTIFHUNG
+acfs
+ACIE
+ACR
+ACTIVATEOPTIONS
+ADate
+ADMINS
+advancedpaste
+advapi
+agentskills
+AHK
+AIUI
+Allmodule
+ALLNOISE
+AOklab
+aot
+APMPOWERSTATUSCHANGE
+APMRESUMEAUTOMATIC
+APMRESUMESUSPEND
+appext
+appsfeatures
+appxpackage
+Aquadrant
+ARTIFACTSTAGINGDIRECTORY
+Ashcraft
+ASUS
+AUO
+authenticode
+azureaiinference
+azureinference
+azureopenai
+Backlight
+backticks
+Badflags
+Badmode
+Badparam
+BCIE
+BIGGERSIZEOK
+binskim
+blittable
+blt
+bluelightreduction
+bluelightreductionstate
+BOklab
+Bootstrappers
+breadcrumb
+BUNDLEINFO
+BYCOMMAND
+Canvascustomlayout
+carlos
+Carlseibert
+caub
+CBN
+CDPX
+Cds
+cer
+chatasweetie
+checkmarks
+Chunghwa
+CIBUILD
+CIELCh
+classguid
+classmethod
+claude
+CLEARTYPE
+clientedge
+clp
+CMN
+CODENAME
+Coen
+cognitiveservices
+colorref
+commandnotfound
+COMPOSITIONDISABLED
+constexpr
+contentdialog
+Convs
+coppied
+copyable
+COPYASUNCCONTEXTMENU
+COPYASUNCEXT
+coreclr
+Corpor
+covrun
+Cowait
+cpptools
+cppvsdbg
+creativecommons
+cropandlock
+CROPTOSQUARE
+crt
+csdevkit
+CSOT
+CURSORSHOWING
+cursorwrap
+CUSTOMFORMATPLACEHOLDER
+CWMO
+Czechia
+DAffine
+DAFFINETRANSFORM
+dbcc
+DBT
+DCapabilities
+ddc
+debouncer
+Deduplicator
+DEFAULTSIZE
+defaulttonearest
+DESKTOPHORZRES
+DESKTOPVERTRES
+devenv
+DEVICEINTERFACE
+devicetype
+DEVINTERFACE
+DEVNODES
+DEVTYP
+dfx
+diffs
+digicert
+DINORMAL
+displayconfig
+diu
+dlgmodalframe
+downsampled
+downsampling
+downscale
+DPMS
+DString
+DSVG
+dto
+dutil
+dwflags
+Dxva
+eab
+EAccess
+edid
+eep
+EInvalid
+eku
+emojis
+ENot
+ENTRYW
+environmentvariables
+EProvider
+etd
+EXECUTEDEFAULT
+exf
+exprtk
+fdw
+fdx
+FErase
+fesf
+FFFF
+FFh
+Figma
+fileexploreraddons
+fileexplorerpreview
+filelocksmith
+FInc
+findmymouse
+FNumber
+foundrylocal
+framechanged
+FRestore
+fsanitize
+ftps
+fuzzingtesting
+fxf
+gameid
+geolocator
+GETLBTEXT
+gfx
+gitmodules
+googleai
+googlegemini
+Gotchas
+grctlext
+Gridcustomlayout
+Hann
+Hantai
+HDEVNOTIFY
+hgdiobj
+HHmmssfff
+HICONSM
+hkmng
+HMON
+HOOKPROC
+hostsfileeditor
+Hostx
+hotfixes
+HPhysical
+hredraw
+HSpeed
+HSync
+hutchinsoniana
+HWP
+ICONONLY
+IDOn
+ifd
+IIM
+ILD
+inapp
+inlines
+Inno
+Innolux
+installdir
+intput
+invokecommand
+ipreviewhandlervisualssetfont
+IPTC
+irow
+isfinite
+issuecomment
+istep
+IUWP
+IVO
+jeli
+JOBOBJECT
+Kantai
+keycap
+keyring
+KVM
+kvp
+LARGEICON
+lbl
+Lbuttondown
+LCh
+lcid
+lcl
+LEFTALIGN
+leftclick
+Lenovo
+LFU
+LGD
+LIBFUZZER
+lightswitch
+LIVEDRAW
+livezoom
+lng
+LOCKTYPE
+LOGMSG
+lon
+lpch
+LPrivate
+lquadrant
+makeappx
+makepri
+Malware
+maximizebox
+mber
+Mbuttondown
+mccs
+mcp
+Metacharacter
+metadatamatters
+middleclickaction
+MIIM
+mikeclayton
+mikehall
+minimizebox
+modelcontextprotocol
+mousehighlighter
+mousejump
+mousepointer
+mouseutils
+MSAL
+msdia
+MSIs
+mstsc
+mswhql
+muxx
+muxxc
+muxxh
+MVPs
+myorg
+myrepo
+Nanjing
+NEWFILEHEADER
+nightlight
+nodiscard
+nologo
+nomove
+nosize
+NOTOPMOST
+Notupdated
+notwindows
+nowarn
+NPU
+ntfs
+nullref
+ollama
+onebranch
+onnx
+OOBEUI
+openrdp
+openurl
+Optronics
+outputtype
+PARENTRELATIVE
+PARENTRELATIVEFORUI
+PBP
+pbrush
+PDBs
+pdmodels
+phicon
+PHL
+Photoshop
+pii
+pkgfamily
+PKI
+PMs
+Pomodoro
+POWERBROADCAST
+powerdisplay
+POWERDISPLAYMODULEINTERFACE
+ppwsz
+Premul
+primaryclickaction
+processthreadsapi
+prot
+pscustomobject
+Psr
+pvct
+qdc
+QDS
+QNN
+quickaccent
+RAquadrant
+rasterization
+rasterizing
+Rbuttondown
+rdp
+regsvr
+releaseblog
+remotedesktop
+RENDERFULLCONTENT
+rguid
+rhk
+rollups
+rtb
+samsung
+sancov
+screenruler
+secondaryclickaction
+securestring
+selfhost
+settingscard
+sharpfuzz
+shcore
+SHELLICONSIZE
+SHIL
+shk
+Signedness
+signtool
+SIIGBF
+slnf
+slnx
+smileys
+snk
+Ssn
+sszzz
+staticedge
+staticmethod
+steamapps
+STGMREAD
+streamable
+STRSAFE
+stuttery
+subresource
+swp
+SWPNOSIZE
+SWPNOZORDER
+sysmenu
+systemai
+TARG
+taskbar
+TESTONLY
+TEXTBOXNEWLINE
+textextractor
+textvariable
+tgamma
+THEMECHANGED
+thickframe
+Tianma
+tmain
+tontrager
+tskill
+tweakable
+UBreak
+ubrk
+UError
+uild
+uitests
+UITo
+Ultrawide
+UMax
+UMin
+unins
+Uninstaller
+unsubscribes
+upscaling
+USEINSTALLERFORTEST
+uxt
+VARTYPE
+vcenter
+vcp
+vcpname
+vesa
+viewmodels
+virama
+vnd
+vredraw
+VSpeed
+VSync
+WASDK
+WCRAPI
+wft
+wikimedia
+wikipedia
+windowedge
+WINDOWSAPPRUNTIME
+windowsml
+winexe
+winforms
+wingetpkgs
+winml
+wmi
+wmsg
+wndproc
+wom
+worktree
+xap
+XButton
+Xbuttondown
+xcopy
+XDeployment
+xdf
+XDimension
+XLoc
+xmp
+XPos
+XSpeed
+XTimer
+XXL
+YDimension
+YPos
+YSpeed
+YTimer
+zamora
+zonability
 Zorder

.pipelines/ESRPSigning_core.json

@@ -126,6 +126,10 @@
             "FileLocksmithContextMenuPackage.msix",
             "FileLocksmithCLI.exe",
 
+            "WinUI3Apps\\PowerToys.CopyAsUNCExt.dll",
+            "WinUI3Apps\\PowerToys.CopyAsUNCContextMenu.dll",
+            "CopyAsUNCContextMenuPackage.msix",
+
             "WinUI3Apps\\Peek.Common.dll",
             "WinUI3Apps\\Peek.FilePreviewer.dll",
             "WinUI3Apps\\Powertoys.Peek.UI.dll",

.pipelines/versionSetting.ps1

@@ -86,3 +86,12 @@ $newPlusContextMenuAppManifestReadFileLocation = $newPlusContextMenuAppManifestW
 $newPlusContextMenuAppManifest.Package.Identity.Version = $versionNumber + '.0'
 Write-Host "NewPlusContextMenu version" $newPlusContextMenuAppManifest.Package.Identity.Version
 $newPlusContextMenuAppManifest.Save($newPlusContextMenuAppManifestWriteFileLocation);
+
+# Set CopyAsUNCContextMenu package version in AppManifest.xml
+$copyAsUNCContextMenuAppManifestWriteFileLocation = $PSScriptRoot + '/../src/modules/CopyAsUNC/CopyAsUNCContextMenu/AppxManifest.xml';
+$copyAsUNCContextMenuAppManifestReadFileLocation = $copyAsUNCContextMenuAppManifestWriteFileLocation;
+
+[XML]$copyAsUNCContextMenuAppManifest = Get-Content $copyAsUNCContextMenuAppManifestReadFileLocation
+$copyAsUNCContextMenuAppManifest.Package.Identity.Version = $versionNumber + '.0'
+Write-Host "CopyAsUNCContextMenu version" $copyAsUNCContextMenuAppManifest.Package.Identity.Version
+$copyAsUNCContextMenuAppManifest.Save($copyAsUNCContextMenuAppManifestWriteFileLocation);

PowerToys.slnx

@@ -9,11 +9,11 @@
       <Platform Solution="*|ARM64" Project="ARM64" />
       <Platform Solution="*|x64" Project="x64" />
     </Project>
-    <Project Path="src/common/Common.UI/Common.UI.csproj">
+    <Project Path="src/common/Common.UI.Controls/Common.UI.Controls.csproj">
       <Platform Solution="*|ARM64" Project="ARM64" />
       <Platform Solution="*|x64" Project="x64" />
     </Project>
-    <Project Path="src/common/Common.UI.Controls/Common.UI.Controls.csproj">
+    <Project Path="src/common/Common.UI/Common.UI.csproj">
       <Platform Solution="*|ARM64" Project="ARM64" />
       <Platform Solution="*|x64" Project="x64" />
     </Project>
@@ -380,6 +380,11 @@
     </Project>
     <Project Path="src/modules/cmdpal/Microsoft.Terminal.UI/Microsoft.Terminal.UI.vcxproj" Id="6515f03f-e56d-4db4-b23d-ac4fb80db36f" />
   </Folder>
+  <Folder Name="/modules/CopyAsUNC/">
+    <Project Path="src/modules/CopyAsUNC/CopyAsUNCContextMenu/CopyAsUNCContextMenu.vcxproj" Id="caa90eba-0776-4e3a-9d71-7e2c95a3c221" />
+    <Project Path="src/modules/CopyAsUNC/CopyAsUNCExt/CopyAsUNCExt.vcxproj" Id="7d462a53-6ec3-44eb-ae6f-b86ac892c9e3" />
+    <Project Path="src/modules/CopyAsUNC/CopyAsUNCLib/CopyAsUNCLib.vcxproj" Id="ddb485b8-e771-4b9e-a9b5-bff587daf5ab" />
+  </Folder>
   <Folder Name="/modules/CropAndLock/">
     <Project Path="src/modules/CropAndLock/CropAndLock/CropAndLock.vcxproj" Id="f5e1146e-b7b3-4e11-85fd-270a500bd78c" />
     <Project Path="src/modules/CropAndLock/CropAndLockModuleInterface/CropAndLockModuleInterface.vcxproj" Id="3157fa75-86cf-4ee2-8f62-c43f776493c6" />

installer/PowerToysSetupCustomActionsVNext/CustomAction.cpp

@@ -1429,7 +1429,7 @@ UINT __stdcall UnRegisterContextMenuPackagesCA(MSIHANDLE hInstall)
     try
     {
         // Packages to unregister
-        const std::vector<std::wstring> packagesToRemoveDisplayName{{L"PowerRenameContextMenu"}, {L"ImageResizerContextMenu"}, {L"FileLocksmithContextMenu"}, {L"NewPlusContextMenu"}};
+        const std::vector<std::wstring> packagesToRemoveDisplayName{{L"PowerRenameContextMenu"}, {L"ImageResizerContextMenu"}, {L"FileLocksmithContextMenu"}, {L"NewPlusContextMenu"}, {L"CopyAsUNCContextMenu"}};
 
         for (auto const &package : packagesToRemoveDisplayName)
         {

installer/PowerToysSetupVNext/CopyAsUNC.wxs

@@ -0,0 +1,27 @@
+<Wix xmlns="http://wixtoolset.org/schemas/v4/wxs">
+
+  <?include $(sys.CURRENTDIR)\Common.wxi?>
+
+  <?define CopyAsUNCAssetsFiles=?>
+  <?define CopyAsUNCAssetsFilesPath=$(var.BinDir)WinUI3Apps\Assets\CopyAsUNC\?>
+
+  <Fragment>
+    <DirectoryRef Id="WinUI3AppsAssetsFolder">
+      <Directory Id="CopyAsUNCAssetsInstallFolder" Name="CopyAsUNC" />
+    </DirectoryRef>
+    <DirectoryRef Id="CopyAsUNCAssetsInstallFolder" FileSource="$(var.CopyAsUNCAssetsFilesPath)">
+    <!-- Generated by generateFileComponents.ps1 -->
+    <!--CopyAsUNCAssetsFiles_Component_Def-->
+    </DirectoryRef>
+
+    <ComponentGroup Id="CopyAsUNCComponentGroup">
+      <Component Id="RemoveCopyAsUNCFolder" Guid="3E5A1B2C-7F4D-4E8A-9C6B-1D2E3F4A5B6C" Directory="CopyAsUNCAssetsInstallFolder">
+        <RegistryKey Root="$(var.RegistryScope)" Key="Software\Classes\powertoys\components">
+          <RegistryValue Type="string" Name="RemoveCopyAsUNCFolder" Value="" KeyPath="yes" />
+        </RegistryKey>
+        <RemoveFolder Id="RemoveFolderCopyAsUNCAssetsFolder" Directory="CopyAsUNCAssetsInstallFolder" On="uninstall" />
+      </Component>
+    </ComponentGroup>
+
+  </Fragment>
+</Wix>

installer/PowerToysSetupVNext/PowerToysInstallerVNext.wixproj

@@ -34,6 +34,7 @@ call powershell.exe -NonInteractive -executionpolicy Unrestricted -File $(MSBuil
       call move /Y ..\..\..\BaseApplications.wxs.bk ..\..\..\BaseApplications.wxs
       call move /Y ..\..\..\CmdPal.wxs.bk ..\..\..\CmdPal.wxs
       call move /Y ..\..\..\ColorPicker.wxs.bk ..\..\..\ColorPicker.wxs
+      call move /Y ..\..\..\CopyAsUNC.wxs.bk ..\..\..\CopyAsUNC.wxs
       call move /Y ..\..\..\Core.wxs.bk ..\..\..\Core.wxs
       call move /Y ..\..\..\DscResources.wxs.bk ..\..\..\DscResources.wxs
       call move /Y ..\..\..\EnvironmentVariables.wxs.bk ..\..\..\EnvironmentVariables.wxs
@@ -115,6 +116,7 @@ call powershell.exe -NonInteractive -executionpolicy Unrestricted -File $(MSBuil
     <Compile Include="BaseApplications.wxs" />
     <Compile Include="CmdPal.wxs" />
     <Compile Include="ColorPicker.wxs" />
+    <Compile Include="CopyAsUNC.wxs" />
     <Compile Include="EnvironmentVariables.wxs" />
     <Compile Include="FileExplorerPreview.wxs" />
     <Compile Include="FileLocksmith.wxs" />

installer/PowerToysSetupVNext/Product.wxs

@@ -45,6 +45,7 @@
       <ComponentGroupRef Id="WinUI3ApplicationsComponentGroup" />
       <ComponentGroupRef Id="AwakeComponentGroup" />
       <ComponentGroupRef Id="ColorPickerComponentGroup" />
+      <ComponentGroupRef Id="CopyAsUNCComponentGroup" />
       <ComponentGroupRef Id="FileExplorerPreviewComponentGroup" />
       <ComponentGroupRef Id="FileLocksmithComponentGroup" />
       <ComponentGroupRef Id="HostsComponentGroup" />

installer/PowerToysSetupVNext/generateAllFileComponents.ps1

@@ -178,6 +178,10 @@ Generate-FileList -fileDepsJson "" -fileListName MonacoPreviewHandlerCustomLangu
 Generate-FileComponents -fileListName "MonacoPreviewHandlerMonacoAssetsFiles" -wxsFilePath $PSScriptRoot\FileExplorerPreview.wxs
 Generate-FileComponents -fileListName "MonacoPreviewHandlerCustomLanguagesFiles" -wxsFilePath $PSScriptRoot\FileExplorerPreview.wxs
 
+#CopyAsUNC
+Generate-FileList -fileDepsJson "" -fileListName CopyAsUNCAssetsFiles -wxsFilePath $PSScriptRoot\CopyAsUNC.wxs -depsPath "$PSScriptRoot..\..\..\$platform\Release\WinUI3Apps\Assets\CopyAsUNC"
+Generate-FileComponents -fileListName "CopyAsUNCAssetsFiles" -wxsFilePath $PSScriptRoot\CopyAsUNC.wxs
+
 #FileLocksmith
 Generate-FileList -fileDepsJson "" -fileListName FileLocksmithAssetsFiles -wxsFilePath $PSScriptRoot\FileLocksmith.wxs -depsPath "$PSScriptRoot..\..\..\$platform\Release\WinUI3Apps\Assets\FileLocksmith"
 Generate-FileComponents -fileListName "FileLocksmithAssetsFiles" -wxsFilePath $PSScriptRoot\FileLocksmith.wxs

src/common/GPOWrapper/GPOWrapper.cpp

@@ -300,4 +300,8 @@ namespace winrt::PowerToys::GPOWrapper::implementation
     {
         return static_cast<GpoRuleConfigured>(powertoys_gpo::getConfiguredNewPlusHideBuiltInNewContextMenuValue());
     }
+    GpoRuleConfigured GPOWrapper::GetConfiguredCopyAsUNCEnabledValue()
+    {
+        return static_cast<GpoRuleConfigured>(powertoys_gpo::getConfiguredCopyAsUNCEnabledValue());
+    }
 }

src/common/GPOWrapper/GPOWrapper.h

@@ -80,6 +80,7 @@ namespace winrt::PowerToys::GPOWrapper::implementation
         static GpoRuleConfigured GetConfiguredRunAtStartupValue();
         static GpoRuleConfigured GetConfiguredNewPlusReplaceVariablesValue();
         static GpoRuleConfigured GetConfiguredNewPlusHideBuiltInNewContextMenuValue();
+        static GpoRuleConfigured GetConfiguredCopyAsUNCEnabledValue();
     };
 }
 

src/common/GPOWrapper/GPOWrapper.idl

@@ -84,6 +84,7 @@ namespace PowerToys
             static GpoRuleConfigured GetConfiguredRunAtStartupValue();
             static GpoRuleConfigured GetConfiguredNewPlusReplaceVariablesValue();
             static GpoRuleConfigured GetConfiguredNewPlusHideBuiltInNewContextMenuValue();
+            static GpoRuleConfigured GetConfiguredCopyAsUNCEnabledValue();
         }
     }
 }

src/common/utils/gpo.h

@@ -72,6 +72,7 @@ namespace powertoys_gpo
     const std::wstring POLICY_CONFIGURE_ENABLED_QOI_THUMBNAILS = L"ConfigureEnabledUtilityFileExplorerQOIThumbnails";
     const std::wstring POLICY_CONFIGURE_ENABLED_NEWPLUS = L"ConfigureEnabledUtilityNewPlus";
     const std::wstring POLICY_CONFIGURE_ENABLED_WORKSPACES = L"ConfigureEnabledUtilityWorkspaces";
+    const std::wstring POLICY_CONFIGURE_ENABLED_COPY_AS_UNC = L"ConfigureEnabledUtilityCopyAsUNC";
 
     // The registry value names for PowerToys installer and update policies.
     const std::wstring POLICY_DISABLE_PER_USER_INSTALLATION = L"PerUserInstallationDisabled";
@@ -512,6 +513,11 @@ namespace powertoys_gpo
     {
         return getUtilityEnabledValue(POLICY_CONFIGURE_ENABLED_NEWPLUS);
     }
+
+    inline gpo_rule_configured_t getConfiguredCopyAsUNCEnabledValue()
+    {
+        return getUtilityEnabledValue(POLICY_CONFIGURE_ENABLED_COPY_AS_UNC);
+    }
 #pragma endregion UtilityEnabledStatePolicies
 
     // Individual module setting policies

src/modules/CopyAsUNC/CopyAsUNCContextMenu/AppxManifest.xml

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Package xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
+  xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
+  xmlns:uap2="http://schemas.microsoft.com/appx/manifest/uap/windows10/2"
+  xmlns:uap3="http://schemas.microsoft.com/appx/manifest/uap/windows10/3"
+  xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
+  xmlns:desktop="http://schemas.microsoft.com/appx/manifest/desktop/windows10"
+  xmlns:desktop4="http://schemas.microsoft.com/appx/manifest/desktop/windows10/4"
+  xmlns:desktop5="http://schemas.microsoft.com/appx/manifest/desktop/windows10/5"
+  xmlns:uap10="http://schemas.microsoft.com/appx/manifest/uap/windows10/10"
+  xmlns:com="http://schemas.microsoft.com/appx/manifest/com/windows10" IgnorableNamespaces="uap uap2 uap3 rescap desktop desktop4 desktop5 uap10 com">
+  <Identity Name="Microsoft.PowerToys.CopyAsUNCContextMenu" ProcessorArchitecture="neutral" Publisher="CN=Microsoft Corporation, O=Microsoft Corporation, L=Redmond, S=Washington, C=US" Version="1.0.0.0" />
+  <Properties>
+    <DisplayName>PowerToys Copy as UNC Context Menu</DisplayName>
+    <PublisherDisplayName>Microsoft</PublisherDisplayName>
+    <Logo>Assets\CopyAsUNC\storelogo.png</Logo>
+    <uap10:AllowExternalContent>true</uap10:AllowExternalContent>
+  </Properties>
+  <Resources>
+    <Resource Language="en-us" />
+  </Resources>
+  <Dependencies>
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.18950.0" MaxVersionTested="10.0.19000.0" />
+  </Dependencies>
+  <Capabilities>
+    <rescap:Capability Name="runFullTrust" />
+    <rescap:Capability Name="unvirtualizedResources"/>
+  </Capabilities>
+  <Applications>
+    <Application Id="Microsoft.PowerToys.CopyAsUNCContextMenu" Executable="PowerToys.exe" uap10:TrustLevel="mediumIL" uap10:RuntimeBehavior="win32App">
+      <uap:VisualElements AppListEntry="none" DisplayName="PowerToys Copy as UNC Context Menu" Description="CopyAsUNCContextMenu" BackgroundColor="transparent" Square150x150Logo="Assets\CopyAsUNC\Square150x150Logo.png" Square44x44Logo="Assets\CopyAsUNC\Square44x44Logo.png">
+        <uap:DefaultTile Wide310x150Logo="Assets\CopyAsUNC\Wide310x150Logo.png" Square310x310Logo="Assets\CopyAsUNC\LargeTile.png" Square71x71Logo="Assets\CopyAsUNC\SmallTile.png"></uap:DefaultTile>
+        <uap:SplashScreen Image="Assets\CopyAsUNC\SplashScreen.png" />
+      </uap:VisualElements>
+      <Extensions>
+        <desktop4:Extension Category="windows.fileExplorerContextMenus">
+          <desktop4:FileExplorerContextMenus>
+            <desktop5:ItemType Type="Directory">
+              <desktop5:Verb Id="CopyAsUNCCommand" Clsid="89A22F51-9ED6-48FE-81FE-5DFD36F8CD32" />
+            </desktop5:ItemType>
+            <desktop5:ItemType Type="*">
+              <desktop5:Verb Id="CopyAsUNCCommand" Clsid="89A22F51-9ED6-48FE-81FE-5DFD36F8CD32" />
+            </desktop5:ItemType>
+          </desktop4:FileExplorerContextMenus>
+        </desktop4:Extension>
+        <com:Extension Category="windows.comServer" uap10:RuntimeBehavior="packagedClassicApp">
+          <com:ComServer>
+            <com:SurrogateServer DisplayName="Context menu verb handler">
+              <com:Class Id="89A22F51-9ED6-48FE-81FE-5DFD36F8CD32" Path="PowerToys.CopyAsUNCContextMenu.dll" ThreadingModel="STA"/>
+            </com:SurrogateServer>
+          </com:ComServer>
+        </com:Extension>
+      </Extensions>
+    </Application>
+  </Applications>
+</Package>

src/modules/CopyAsUNC/CopyAsUNCContextMenu/CopyAsUNCContextMenu.base.rc

@@ -0,0 +1,45 @@
+#include <windows.h>
+#include "Generated Files/resource.h"
+#include "../../../common/version/version.h"
+
+#define APSTUDIO_READONLY_SYMBOLS
+#include "winres.h"
+#undef APSTUDIO_READONLY_SYMBOLS
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION FILE_VERSION
+ PRODUCTVERSION PRODUCT_VERSION
+ FILEFLAGSMASK 0x3fL
+#ifdef _DEBUG
+ FILEFLAGS 0x1L
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS 0x40004L
+ FILETYPE 0x2L
+ FILESUBTYPE 0x0L
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904b0"
+        BEGIN
+            VALUE "CompanyName", COMPANY_NAME
+            VALUE "FileDescription", FILE_DESCRIPTION
+            VALUE "FileVersion", FILE_VERSION_STRING
+            VALUE "InternalName", INTERNAL_NAME
+            VALUE "LegalCopyright", COPYRIGHT_NOTE
+            VALUE "OriginalFilename", ORIGINAL_FILENAME
+            VALUE "ProductName", PRODUCT_NAME
+            VALUE "ProductVersion", PRODUCT_VERSION_STRING
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1200
+    END
+END

src/modules/CopyAsUNC/CopyAsUNCContextMenu/CopyAsUNCContextMenu.vcxproj

@@ -0,0 +1,161 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <Import Project="$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.props')" />
+  <Target Name="GenerateResourceFiles" BeforeTargets="PrepareForBuild">
+    <Exec Command="powershell -NonInteractive -executionpolicy Unrestricted $(RepoRoot)tools\build\convert-resx-to-rc.ps1 $(MSBuildThisFileDirectory) resource.base.h resource.h CopyAsUNCContextMenu.base.rc CopyAsUNCContextMenu.rc" />
+  </Target>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{caa90eba-0776-4e3a-9d71-7e2c95a3c221}</ProjectGuid>
+    <RootNamespace>CopyAsUNCContextMenu</RootNamespace>
+  </PropertyGroup>
+  <PropertyGroup>
+    <TargetName>PowerToys.CopyAsUNCContextMenu</TargetName>
+    <!-- Needs a different int dir to avoid conflicts in msix creation. -->
+    <IntDir>$(SolutionDir)$(Platform)\$(Configuration)\TemporaryBuild\obj\$(ProjectName)\</IntDir>
+    <OutDir>$(RepoRoot)$(Platform)\$(Configuration)\WinUI3Apps\</OutDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;COPYASUNCCONTEXTMENU_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>..;../../..;</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableUAC>false</EnableUAC>
+      <AdditionalDependencies>runtimeobject.lib;Mpr.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <ModuleDefinitionFile>Source.def</ModuleDefinitionFile>
+    </Link>
+    <PreBuildEvent>
+      <Command>del $(OutDir)\CopyAsUNCContextMenuPackage.msix /q
+MakeAppx.exe pack /d . /p $(OutDir)CopyAsUNCContextMenuPackage.msix /nv</Command>
+    </PreBuildEvent>
+    <PostBuildEvent>
+      <Command>if not exist "$(OutDir)Assets\CopyAsUNC\" mkdir "$(OutDir)Assets\CopyAsUNC\"
+xcopy /Y "$(ProjectDir)Assets\CopyAsUNC\CopyAsUNC.ico" "$(OutDir)Assets\CopyAsUNC\"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;COPYASUNCCONTEXTMENU_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>..;../../..;</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableUAC>false</EnableUAC>
+      <AdditionalDependencies>runtimeobject.lib;Mpr.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <ModuleDefinitionFile>Source.def</ModuleDefinitionFile>
+    </Link>
+    <PreBuildEvent>
+      <Command>del $(OutDir)\CopyAsUNCContextMenuPackage.msix /q
+MakeAppx.exe pack /d . /p $(OutDir)CopyAsUNCContextMenuPackage.msix /nv</Command>
+    </PreBuildEvent>
+    <PostBuildEvent>
+      <Command>if not exist "$(OutDir)Assets\CopyAsUNC\" mkdir "$(OutDir)Assets\CopyAsUNC\"
+xcopy /Y "$(ProjectDir)Assets\CopyAsUNC\CopyAsUNC.ico" "$(OutDir)Assets\CopyAsUNC\"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="framework.h" />
+    <ClInclude Include="pch.h" />
+    <ClInclude Include="resource.base.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="dllmain.cpp" />
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader Condition="'$(UsePrecompiledHeaders)' != 'false'">Create</PrecompiledHeader>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+    <None Include="Resources.resx" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Assets\CopyAsUNC\CopyAsUNC.ico">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="Assets\CopyAsUNC\LargeTile.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="Assets\CopyAsUNC\SmallTile.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="Assets\CopyAsUNC\SplashScreen.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="Assets\CopyAsUNC\Square150x150Logo.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="Assets\CopyAsUNC\Square44x44Logo.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="Assets\CopyAsUNC\storelogo.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="Assets\CopyAsUNC\Wide310x150Logo.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="$(RepoRoot)src\common\SettingsAPI\SettingsAPI.vcxproj">
+      <Project>{6955446d-23f7-4023-9bb3-8657f904af99}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(RepoRoot)src\common\version\version.vcxproj">
+      <Project>{cc6e41ac-8174-4e8a-8d22-85dd7f4851df}</Project>
+    </ProjectReference>
+    <ProjectReference Include="..\CopyAsUNCLib\CopyAsUNCLib.vcxproj">
+      <Project>{ddb485b8-e771-4b9e-a9b5-bff587daf5ab}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="CopyAsUNCContextMenu.base.rc" />
+  </ItemGroup>
+  <Import Project="$(RepoRoot)deps\spdlog.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+    <Import Project="$(RepoRoot)packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets" Condition="Exists('$(RepoRoot)packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets')" />
+    <Import Project="$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.targets')" />
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('$(RepoRoot)packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(RepoRoot)packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets'))" />
+    <Error Condition="!Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.props'))" />
+    <Error Condition="!Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.targets'))" />
+  </Target>
+</Project>

src/modules/CopyAsUNC/CopyAsUNCContextMenu/Resources.resx

@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <data name="Copy_As_UNC_Context_Menu_Entry" xml:space="preserve">
+    <value>Copy as UNC path</value>
+    <comment>This text will be shown when the user opens the context menu (right clicks) a file or folder on a mapped network drive.</comment>
+  </data>
+  <data name="Copy_As_UNC_App_Name" xml:space="preserve">
+    <value>Copy as UNC</value>
+  </data>
+</root>

src/modules/CopyAsUNC/CopyAsUNCContextMenu/Source.def

@@ -0,0 +1,5 @@
+LIBRARY
+EXPORTS
+DllCanUnloadNow           PRIVATE
+DllGetClassObject         PRIVATE
+DllGetActivationFactory   PRIVATE

src/modules/CopyAsUNC/CopyAsUNCContextMenu/dllmain.cpp

@@ -0,0 +1,221 @@
+// dllmain.cpp : Defines the entry point for the DLL application.
+#include "pch.h"
+
+#include <common/utils/process_path.h>
+#include <common/utils/resources.h>
+
+#include "CopyAsUNCLib/Settings.h"
+
+#include <Shlwapi.h>
+#include <shobjidl_core.h>
+#include <winnetwk.h>
+#include <string>
+#include <vector>
+#include <wrl/module.h>
+
+#include "Generated Files/resource.h"
+
+#pragma comment(lib, "Mpr.lib")
+
+using namespace Microsoft::WRL;
+
+HINSTANCE g_hInst = 0;
+
+BOOL APIENTRY DllMain(HMODULE hModule,
+                      DWORD ul_reason_for_call,
+                      LPVOID lpReserved)
+{
+    switch (ul_reason_for_call)
+    {
+    case DLL_PROCESS_ATTACH:
+        g_hInst = hModule;
+        break;
+    case DLL_PROCESS_DETACH:
+        break;
+    }
+    return TRUE;
+}
+
+class __declspec(uuid("89A22F51-9ED6-48FE-81FE-5DFD36F8CD32")) CopyAsUNCContextMenuCommand final : public RuntimeClass<RuntimeClassFlags<ClassicCom>, IExplorerCommand, IObjectWithSite>
+{
+public:
+    virtual const wchar_t* Title() { return L"Copy as UNC path"; }
+    virtual const EXPCMDFLAGS Flags() { return ECF_DEFAULT; }
+    virtual const EXPCMDSTATE State(_In_opt_ IShellItemArray*) { return ECS_ENABLED; }
+
+    // IExplorerCommand
+    IFACEMETHODIMP GetTitle(_In_opt_ IShellItemArray*, _Outptr_result_nullonfailure_ PWSTR* name)
+    {
+        return SHStrDup(context_menu_caption.c_str(), name);
+    }
+
+    IFACEMETHODIMP GetIcon(_In_opt_ IShellItemArray*, _Outptr_result_nullonfailure_ PWSTR* icon)
+    {
+        std::wstring iconResourcePath = get_module_folderpath(g_hInst);
+        iconResourcePath += L"\\Assets\\CopyAsUNC\\";
+        iconResourcePath += L"CopyAsUNC.ico";
+        return SHStrDup(iconResourcePath.c_str(), icon);
+    }
+
+    IFACEMETHODIMP GetToolTip(_In_opt_ IShellItemArray*, _Outptr_result_nullonfailure_ PWSTR* infoTip)
+    {
+        *infoTip = nullptr;
+        return E_NOTIMPL;
+    }
+
+    IFACEMETHODIMP GetCanonicalName(_Out_ GUID* guidCommandName)
+    {
+        *guidCommandName = __uuidof(this);
+        return S_OK;
+    }
+
+    IFACEMETHODIMP GetState(_In_opt_ IShellItemArray* selection, _In_ BOOL /*okToBeSlow*/, _Out_ EXPCMDSTATE* cmdState)
+    {
+        *cmdState = ECS_HIDDEN;
+
+        if (!CopyAsUNCSettingsInstance().GetEnabled())
+            return S_OK;
+
+        if (CopyAsUNCSettingsInstance().GetShowInExtendedContextMenu())
+            return S_OK;
+
+        // Only show for items on mapped network drives
+        if (selection)
+        {
+            IShellItem* item = nullptr;
+            if (SUCCEEDED(selection->GetItemAt(0, &item)))
+            {
+                LPWSTR filePath = nullptr;
+                if (SUCCEEDED(item->GetDisplayName(SIGDN_FILESYSPATH, &filePath)))
+                {
+                    // Check first 3 chars for drive root (e.g. "Z:\")
+                    std::wstring root(filePath, min((size_t)3, wcslen(filePath)));
+                    if (GetDriveTypeW(root.c_str()) == DRIVE_REMOTE)
+                    {
+                        *cmdState = ECS_ENABLED;
+                    }
+                    CoTaskMemFree(filePath);
+                }
+                item->Release();
+            }
+        }
+
+        return S_OK;
+    }
+
+    IFACEMETHODIMP Invoke(_In_opt_ IShellItemArray* selection, _In_opt_ IBindCtx*) noexcept
+    {
+        if (!selection)
+            return S_OK;
+
+        IShellItem* item = nullptr;
+        if (FAILED(selection->GetItemAt(0, &item)))
+            return S_OK;
+
+        LPWSTR filePath = nullptr;
+        if (SUCCEEDED(item->GetDisplayName(SIGDN_FILESYSPATH, &filePath)))
+        {
+            std::wstring uncPath;
+
+            // If already a UNC path, use it directly
+            if (wcslen(filePath) >= 2 && filePath[0] == L'\\' && filePath[1] == L'\\')
+            {
+                uncPath = filePath;
+            }
+            else
+            {
+                // Resolve mapped drive letter to UNC via WNetGetUniversalName
+                DWORD bufSize = MAX_PATH * 2;
+                std::vector<BYTE> buf(bufSize);
+                DWORD result = WNetGetUniversalNameW(filePath, UNIVERSAL_NAME_INFO_LEVEL, buf.data(), &bufSize);
+
+                if (result == ERROR_MORE_DATA)
+                {
+                    buf.resize(bufSize);
+                    result = WNetGetUniversalNameW(filePath, UNIVERSAL_NAME_INFO_LEVEL, buf.data(), &bufSize);
+                }
+
+                if (result == NO_ERROR)
+                {
+                    auto info = reinterpret_cast<UNIVERSAL_NAME_INFOW*>(buf.data());
+                    uncPath = info->lpUniversalName;
+                }
+            }
+
+            if (!uncPath.empty())
+            {
+                if (OpenClipboard(nullptr))
+                {
+                    EmptyClipboard();
+                    size_t byteLen = (uncPath.size() + 1) * sizeof(wchar_t);
+                    HGLOBAL hMem = GlobalAlloc(GMEM_MOVEABLE, byteLen);
+                    if (hMem)
+                    {
+                        void* locked = GlobalLock(hMem);
+                        if (locked)
+                        {
+                            memcpy(locked, uncPath.c_str(), byteLen);
+                            GlobalUnlock(hMem);
+                            if (!SetClipboardData(CF_UNICODETEXT, hMem))
+                            {
+                                GlobalFree(hMem);
+                            }
+                        }
+                        else
+                        {
+                            GlobalFree(hMem);
+                        }
+                    }
+                    CloseClipboard();
+                }
+            }
+
+            CoTaskMemFree(filePath);
+        }
+
+        item->Release();
+        return S_OK;
+    }
+
+    IFACEMETHODIMP GetFlags(_Out_ EXPCMDFLAGS* flags)
+    {
+        *flags = Flags();
+        return S_OK;
+    }
+
+    IFACEMETHODIMP EnumSubCommands(_COM_Outptr_ IEnumExplorerCommand** enumCommands)
+    {
+        *enumCommands = nullptr;
+        return E_NOTIMPL;
+    }
+
+    // IObjectWithSite
+    IFACEMETHODIMP SetSite(_In_ IUnknown* site) noexcept
+    {
+        m_site = site;
+        return S_OK;
+    }
+    IFACEMETHODIMP GetSite(_In_ REFIID riid, _COM_Outptr_ void** site) noexcept { return m_site.CopyTo(riid, site); }
+
+protected:
+    ComPtr<IUnknown> m_site;
+    std::wstring context_menu_caption = GET_RESOURCE_STRING_FALLBACK(IDS_COPY_AS_UNC_CONTEXT_MENU_ENTRY, L"Copy as UNC path");
+};
+
+CoCreatableClass(CopyAsUNCContextMenuCommand)
+    CoCreatableClassWrlCreatorMapInclude(CopyAsUNCContextMenuCommand)
+
+        STDAPI DllGetActivationFactory(_In_ HSTRING activatableClassId, _COM_Outptr_ IActivationFactory** factory)
+{
+    return Module<ModuleType::InProc>::GetModule().GetActivationFactory(activatableClassId, factory);
+}
+
+STDAPI DllCanUnloadNow()
+{
+    return Module<InProc>::GetModule().GetObjectCount() == 0 ? S_OK : S_FALSE;
+}
+
+STDAPI DllGetClassObject(_In_ REFCLSID rclsid, _In_ REFIID riid, _COM_Outptr_ void** instance)
+{
+    return Module<InProc>::GetModule().GetClassObject(rclsid, riid, instance);
+}

src/modules/CopyAsUNC/CopyAsUNCContextMenu/framework.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
+// Windows Header Files
+#include <windows.h>

src/modules/CopyAsUNC/CopyAsUNCContextMenu/packages.config

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.Windows.CppWinRT" version="2.0.250303.1" targetFramework="native" />
+  <package id="Microsoft.Windows.ImplementationLibrary" version="1.0.231216.1" targetFramework="native" />
+</packages>

src/modules/CopyAsUNC/CopyAsUNCContextMenu/pch.cpp

@@ -0,0 +1,5 @@
+// pch.cpp: source file corresponding to the pre-compiled header
+
+#include "pch.h"
+
+// When you are using pre-compiled headers, this source file is necessary for compilation to succeed.

src/modules/CopyAsUNC/CopyAsUNCContextMenu/pch.h

@@ -0,0 +1,8 @@
+#ifndef PCH_H
+#define PCH_H
+
+#include <atlbase.h>
+
+#include "framework.h"
+
+#endif //PCH_H

src/modules/CopyAsUNC/CopyAsUNCContextMenu/resource.base.h

@@ -0,0 +1,12 @@
+//{{NO_DEPENDENCIES}}
+// Microsoft Visual C++ generated include file.
+
+//////////////////////////////
+// Non-localizable
+
+#define FILE_DESCRIPTION "PowerToys Copy as UNC Context Menu"
+#define INTERNAL_NAME "PowerToys.CopyAsUNCContextMenu.dll"
+#define ORIGINAL_FILENAME "PowerToys.CopyAsUNCContextMenu.dll"
+
+// Non-localizable
+//////////////////////////////

src/modules/CopyAsUNC/CopyAsUNCExt/CopyAsUNCExt.base.rc

@@ -0,0 +1,40 @@
+#include <windows.h>
+#include "Generated Files/resource.h"
+#include "../../../common/version/version.h"
+
+#define APSTUDIO_READONLY_SYMBOLS
+#include "winres.h"
+#undef APSTUDIO_READONLY_SYMBOLS
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION FILE_VERSION
+ PRODUCTVERSION PRODUCT_VERSION
+ FILEFLAGSMASK 0x3fL
+#ifdef _DEBUG
+ FILEFLAGS 0x1L
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS 0x40004L
+ FILETYPE 0x2L
+ FILESUBTYPE 0x0L
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904b0"
+        BEGIN
+            VALUE "CompanyName", COMPANY_NAME
+            VALUE "FileDescription", FILE_DESCRIPTION
+            VALUE "FileVersion", FILE_VERSION_STRING
+            VALUE "InternalName", INTERNAL_NAME
+            VALUE "LegalCopyright", COPYRIGHT_NOTE
+            VALUE "OriginalFilename", ORIGINAL_FILENAME
+            VALUE "ProductName", PRODUCT_NAME
+            VALUE "ProductVersion", PRODUCT_VERSION_STRING
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1200
+    END
+END

src/modules/CopyAsUNC/CopyAsUNCExt/CopyAsUNCExt.vcxproj

@@ -0,0 +1,114 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <Import Project="$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.props')" />
+  <Target Name="GenerateResourceFiles" BeforeTargets="PrepareForBuild">
+    <Exec Command="powershell -NonInteractive -executionpolicy Unrestricted $(RepoRoot)tools\build\convert-resx-to-rc.ps1 $(MSBuildThisFileDirectory) resource.base.h resource.h CopyAsUNCExt.base.rc CopyAsUNCExt.rc" />
+  </Target>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>16.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{7d462a53-6ec3-44eb-ae6f-b86ac892c9e3}</ProjectGuid>
+    <RootNamespace>CopyAsUNCExt</RootNamespace>
+    <OutDir>$(RepoRoot)$(Platform)\$(Configuration)\WinUI3Apps\</OutDir>
+    <TargetName>PowerToys.CopyAsUNCExt</TargetName>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;COPYASUNCEXT_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>..;../../;../../../;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableUAC>false</EnableUAC>
+      <ModuleDefinitionFile>dll.def</ModuleDefinitionFile>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;COPYASUNCEXT_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>..;../../;../../../;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableUAC>false</EnableUAC>
+      <ModuleDefinitionFile>dll.def</ModuleDefinitionFile>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="dllmain.h" />
+    <ClInclude Include="pch.h" />
+    <None Include="packages.config" />
+    <None Include="resource.base.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="Generated Files/CopyAsUNCExt.rc" />
+    <None Include="CopyAsUNCExt.base.rc" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Resources.resx" />
+    <None Include="dll.def" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="dllmain.cpp" />
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader Condition="'$(UsePrecompiledHeaders)' != 'false'">Create</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="PowerToysModule.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="$(RepoRoot)src\common\logger\logger.vcxproj">
+      <Project>{d9b8fc84-322a-4f9f-bbb9-20915c47ddfd}</Project>
+    </ProjectReference>
+    <ProjectReference Include="$(RepoRoot)src\common\SettingsAPI\SettingsAPI.vcxproj">
+      <Project>{6955446d-23f7-4023-9bb3-8657f904af99}</Project>
+    </ProjectReference>
+    <ProjectReference Include="..\CopyAsUNCLib\CopyAsUNCLib.vcxproj">
+      <Project>{ddb485b8-e771-4b9e-a9b5-bff587daf5ab}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <Import Project="$(RepoRoot)deps\spdlog.props" />
+  <ImportGroup Label="ExtensionTargets">
+    <Import Project="$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.targets')" />
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.props'))" />
+    <Error Condition="!Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.targets'))" />
+  </Target>
+</Project>

src/modules/CopyAsUNC/CopyAsUNCExt/PowerToysModule.cpp

@@ -0,0 +1,118 @@
+#include "pch.h"
+
+#include <interface/powertoy_module_interface.h>
+#include <common/SettingsAPI/settings_objects.h>
+#include <common/logger/logger.h>
+#include <common/logger/logger_settings.h>
+#include <common/utils/logger_helper.h>
+#include <common/utils/package.h>
+#include <common/utils/process_path.h>
+
+#include "CopyAsUNCLib/Constants.h"
+#include "CopyAsUNCLib/Settings.h"
+
+#include "dllmain.h"
+#include "Generated Files/resource.h"
+
+class CopyAsUNCModule : public PowertoyModuleIface
+{
+public:
+    CopyAsUNCModule()
+    {
+        LoggerHelpers::init_logger(constants::nonlocalizable::PowerToyName, L"ModuleInterface", "CopyAsUNC");
+        init_settings();
+    }
+
+    virtual const wchar_t* get_name() override
+    {
+        static WCHAR buffer[128];
+        LoadStringW(globals::instance, IDS_COPY_AS_UNC_POWERTOYNAME, buffer, ARRAYSIZE(buffer));
+        return buffer;
+    }
+
+    virtual const wchar_t* get_key() override
+    {
+        return constants::nonlocalizable::PowerToyKey;
+    }
+
+    virtual powertoys_gpo::gpo_rule_configured_t gpo_policy_enabled_configuration() override
+    {
+        return powertoys_gpo::getConfiguredCopyAsUNCEnabledValue();
+    }
+
+    virtual bool get_config(_Out_ PWSTR buffer, _Out_ int* buffer_size) override
+    {
+        HINSTANCE hinstance = reinterpret_cast<HINSTANCE>(&__ImageBase);
+        PowerToysSettings::Settings settings(hinstance, get_name());
+        settings.add_bool_toggle(L"bool_show_extended_menu",
+                                 L"",
+                                 CopyAsUNCSettingsInstance().GetShowInExtendedContextMenu());
+        return settings.serialize_to_buffer(buffer, buffer_size);
+    }
+
+    virtual void set_config(PCWSTR config) override
+    {
+        try
+        {
+            PowerToysSettings::PowerToyValues values =
+                PowerToysSettings::PowerToyValues::from_json_string(config, get_key());
+
+            auto extendedMenu = values.get_bool_value(L"bool_show_extended_menu");
+            if (extendedMenu.has_value())
+            {
+                CopyAsUNCSettingsInstance().SetExtendedContextMenuOnly(extendedMenu.value());
+                CopyAsUNCSettingsInstance().Save();
+            }
+        }
+        catch (std::exception& e)
+        {
+            Logger::error("Configuration parsing failed: {}", std::string{ e.what() });
+        }
+    }
+
+    virtual void enable() override
+    {
+        Logger::info(L"Copy as UNC enabled");
+
+        if (package::IsWin11OrGreater())
+        {
+            std::wstring path = get_module_folderpath(globals::instance);
+            std::wstring packageUri = path + L"\\CopyAsUNCContextMenuPackage.msix";
+            if (!package::IsPackageRegisteredWithPowerToysVersion(constants::nonlocalizable::ContextMenuPackageName))
+            {
+                package::RegisterSparsePackage(path, packageUri);
+            }
+        }
+
+        m_enabled = true;
+    }
+
+    virtual void disable() override
+    {
+        Logger::info(L"Copy as UNC disabled");
+        m_enabled = false;
+    }
+
+    virtual bool is_enabled() override
+    {
+        return m_enabled;
+    }
+
+    virtual void destroy() override
+    {
+        delete this;
+    }
+
+private:
+    bool m_enabled = false;
+
+    void init_settings()
+    {
+        m_enabled = CopyAsUNCSettingsInstance().GetEnabled();
+    }
+};
+
+extern "C" __declspec(dllexport) PowertoyModuleIface* __cdecl powertoy_create()
+{
+    return new CopyAsUNCModule();
+}

src/modules/CopyAsUNC/CopyAsUNCExt/Resources.resx

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <resheader name="resmimetype"><value>text/microsoft-resx</value></resheader>
+  <resheader name="version"><value>2.0</value></resheader>
+  <resheader name="reader"><value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value></resheader>
+  <resheader name="writer"><value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value></resheader>
+  <data name="Copy_As_UNC_PowerToyName" xml:space="preserve">
+    <value>Copy as UNC</value>
+  </data>
+</root>

src/modules/CopyAsUNC/CopyAsUNCExt/dll.def

@@ -0,0 +1,3 @@
+LIBRARY
+EXPORTS
+powertoy_create

src/modules/CopyAsUNC/CopyAsUNCExt/dllmain.cpp

@@ -0,0 +1,25 @@
+#include "pch.h"
+
+#pragma comment(lib, "shlwapi")
+
+#include "dllmain.h"
+
+namespace globals
+{
+    HMODULE instance;
+}
+
+BOOL APIENTRY DllMain(HMODULE hModule,
+                      DWORD   ul_reason_for_call,
+                      LPVOID  /*lpReserved*/)
+{
+    switch (ul_reason_for_call)
+    {
+    case DLL_PROCESS_ATTACH:
+        globals::instance = hModule;
+        break;
+    case DLL_PROCESS_DETACH:
+        break;
+    }
+    return TRUE;
+}

src/modules/CopyAsUNC/CopyAsUNCExt/dllmain.h

@@ -0,0 +1,8 @@
+#pragma once
+
+#include "pch.h"
+
+namespace globals
+{
+    extern HMODULE instance;
+}

src/modules/CopyAsUNC/CopyAsUNCExt/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.Windows.CppWinRT" version="2.0.250303.1" targetFramework="native" />
+</packages>

src/modules/CopyAsUNC/CopyAsUNCExt/pch.cpp

@@ -0,0 +1,3 @@
+// pch.cpp: source file corresponding to the pre-compiled header
+
+#include "pch.h"

src/modules/CopyAsUNC/CopyAsUNCExt/pch.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#define WIN32_LEAN_AND_MEAN
+#include <Windows.h>
+#include <Shlwapi.h>
+#include <ShlObj_core.h>
+#include <atlbase.h>
+
+#include <atomic>
+#include <string>
+#include <filesystem>

src/modules/CopyAsUNC/CopyAsUNCExt/resource.base.h

@@ -0,0 +1,14 @@
+//{{NO_DEPENDENCIES}}
+// Microsoft Visual C++ generated include file.
+
+//////////////////////////////
+// Non-localizable
+
+#define IDS_COPY_AS_UNC_POWERTOYNAME 101
+
+#define FILE_DESCRIPTION "PowerToys Copy as UNC Module Interface"
+#define INTERNAL_NAME "PowerToys.CopyAsUNCExt.dll"
+#define ORIGINAL_FILENAME "PowerToys.CopyAsUNCExt.dll"
+
+// Non-localizable
+//////////////////////////////

src/modules/CopyAsUNC/CopyAsUNCLib/Constants.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include "pch.h"
+
+// Non-localizable constants
+namespace constants::nonlocalizable
+{
+    // String key used by PowerToys runner
+    constexpr WCHAR PowerToyKey[] = L"Copy as UNC";
+
+    // Nonlocalized name of this PowerToy, for logs, etc.
+    constexpr WCHAR PowerToyName[] = L"CopyAsUNC";
+
+    // JSON key used to store extended menu enabled
+    constexpr WCHAR JsonKeyShowInExtendedContextMenu[] = L"showInExtendedContextMenu";
+
+    // Path of the JSON file used to store settings
+    constexpr WCHAR DataFilePath[] = L"\\copy-as-unc-settings.json";
+
+    // Name of the tier 1 context menu package
+    constexpr WCHAR ContextMenuPackageName[] = L"CopyAsUNCContextMenu";
+}

src/modules/CopyAsUNC/CopyAsUNCLib/CopyAsUNCLib.vcxproj

@@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <Import Project="$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.props')" />
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{ddb485b8-e771-4b9e-a9b5-bff587daf5ab}</ProjectGuid>
+    <RootNamespace>CopyAsUNCLib</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>../../..;</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>../../..;</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="Constants.h" />
+    <ClInclude Include="Settings.h" />
+    <ClInclude Include="framework.h" />
+    <ClInclude Include="pch.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="Settings.cpp" />
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader Condition="'$(UsePrecompiledHeaders)' != 'false'">Create</PrecompiledHeader>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <Import Project="$(RepoRoot)deps\spdlog.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+    <Import Project="$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.targets')" />
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.props'))" />
+    <Error Condition="!Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.250303.1\build\native\Microsoft.Windows.CppWinRT.targets'))" />
+  </Target>
+</Project>

src/modules/CopyAsUNC/CopyAsUNCLib/Settings.cpp

@@ -0,0 +1,112 @@
+#include "pch.h"
+#include "Settings.h"
+#include "Constants.h"
+
+#include <filesystem>
+#include <common/utils/json.h>
+#include <common/SettingsAPI/settings_helpers.h>
+
+static bool LastModifiedTime(const std::wstring& filePath, FILETIME* lpFileTime)
+{
+    WIN32_FILE_ATTRIBUTE_DATA attr{};
+    if (GetFileAttributesExW(filePath.c_str(), GetFileExInfoStandard, &attr))
+    {
+        *lpFileTime = attr.ftLastWriteTime;
+        return true;
+    }
+    return false;
+}
+
+CopyAsUNCSettings::CopyAsUNCSettings()
+{
+    generalJsonFilePath = PTSettingsHelper::get_powertoys_general_save_file_location();
+    std::wstring savePath = PTSettingsHelper::get_module_save_folder_location(constants::nonlocalizable::PowerToyKey);
+    std::error_code ec;
+
+    jsonFilePath = savePath + constants::nonlocalizable::DataFilePath;
+    RefreshEnabledState();
+    Load();
+}
+
+void CopyAsUNCSettings::Save()
+{
+    json::JsonObject jsonData;
+
+    jsonData.SetNamedValue(constants::nonlocalizable::JsonKeyShowInExtendedContextMenu, json::value(settings.showInExtendedContextMenu));
+
+    json::to_file(jsonFilePath, jsonData);
+    GetSystemTimeAsFileTime(&lastLoadedTime);
+}
+
+void CopyAsUNCSettings::Load()
+{
+    if (!std::filesystem::exists(jsonFilePath))
+    {
+        Save();
+    }
+    else
+    {
+        ParseJson();
+    }
+}
+
+void CopyAsUNCSettings::RefreshEnabledState()
+{
+    FILETIME lastModifiedTime{};
+    if (!(LastModifiedTime(generalJsonFilePath, &lastModifiedTime) &&
+          CompareFileTime(&lastModifiedTime, &lastLoadedGeneralSettingsTime) == 1))
+        return;
+
+    lastLoadedGeneralSettingsTime = lastModifiedTime;
+
+    auto json = json::from_file(generalJsonFilePath);
+    if (!json)
+        return;
+
+    const json::JsonObject& jsonSettings = json.value();
+    try
+    {
+        json::JsonObject modulesEnabledState;
+        json::get(jsonSettings, L"enabled", modulesEnabledState, json::JsonObject{});
+        json::get(modulesEnabledState, L"Copy as UNC", settings.enabled, true);
+    }
+    catch (const winrt::hresult_error&)
+    {
+    }
+}
+
+void CopyAsUNCSettings::Reload()
+{
+    FILETIME lastModifiedTime{};
+    if (LastModifiedTime(jsonFilePath, &lastModifiedTime) &&
+        CompareFileTime(&lastModifiedTime, &lastLoadedTime) == 1)
+    {
+        Load();
+    }
+}
+
+void CopyAsUNCSettings::ParseJson()
+{
+    auto json = json::from_file(jsonFilePath);
+    if (json)
+    {
+        const json::JsonObject& jsonSettings = json.value();
+        try
+        {
+            if (json::has(jsonSettings, constants::nonlocalizable::JsonKeyShowInExtendedContextMenu, json::JsonValueType::Boolean))
+            {
+                settings.showInExtendedContextMenu = jsonSettings.GetNamedBoolean(constants::nonlocalizable::JsonKeyShowInExtendedContextMenu);
+            }
+        }
+        catch (const winrt::hresult_error&)
+        {
+        }
+    }
+    GetSystemTimeAsFileTime(&lastLoadedTime);
+}
+
+CopyAsUNCSettings& CopyAsUNCSettingsInstance()
+{
+    static CopyAsUNCSettings instance;
+    return instance;
+}

src/modules/CopyAsUNC/CopyAsUNCLib/Settings.h

@@ -0,0 +1,53 @@
+#pragma once
+
+#include "pch.h"
+
+#include <common/utils/gpo.h>
+
+class CopyAsUNCSettings
+{
+public:
+    CopyAsUNCSettings();
+
+    inline bool GetEnabled()
+    {
+        auto gpoSetting = powertoys_gpo::getConfiguredCopyAsUNCEnabledValue();
+        if (gpoSetting == powertoys_gpo::gpo_rule_configured_enabled)  return true;
+        if (gpoSetting == powertoys_gpo::gpo_rule_configured_disabled) return false;
+        Reload();
+        RefreshEnabledState();
+        return settings.enabled;
+    }
+
+    inline bool GetShowInExtendedContextMenu() const
+    {
+        return settings.showInExtendedContextMenu;
+    }
+
+    inline void SetExtendedContextMenuOnly(bool extendedOnly)
+    {
+        settings.showInExtendedContextMenu = extendedOnly;
+    }
+
+    void Save();
+    void Load();
+
+private:
+    struct Settings
+    {
+        bool enabled{ true };
+        bool showInExtendedContextMenu{ false };
+    };
+
+    void RefreshEnabledState();
+    void Reload();
+    void ParseJson();
+
+    Settings settings;
+    std::wstring generalJsonFilePath;
+    std::wstring jsonFilePath;
+    FILETIME lastLoadedTime{};
+    FILETIME lastLoadedGeneralSettingsTime{};
+};
+
+CopyAsUNCSettings& CopyAsUNCSettingsInstance();

src/modules/CopyAsUNC/CopyAsUNCLib/framework.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#define WIN32_LEAN_AND_MEAN             // Exclude rarely-used stuff from Windows headers
+// Windows Header Files
+#include <windows.h>

src/modules/CopyAsUNC/CopyAsUNCLib/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.Windows.CppWinRT" version="2.0.250303.1" targetFramework="native" />
+</packages>

src/modules/CopyAsUNC/CopyAsUNCLib/pch.cpp

@@ -0,0 +1,5 @@
+// pch.cpp: source file corresponding to the pre-compiled header
+
+#include "pch.h"
+
+// When you are using pre-compiled headers, this source file is necessary for compilation to succeed.

src/modules/CopyAsUNC/CopyAsUNCLib/pch.h

@@ -0,0 +1,9 @@
+#ifndef PCH_H
+#define PCH_H
+
+#include <atlbase.h>
+#include <string>
+
+#include "framework.h"
+
+#endif //PCH_H

src/runner/main.cpp

@@ -288,6 +288,7 @@ int runner(bool isProcessElevated, bool openSettings, std::string settingsWindow
             L"PowerToys.LightSwitchModuleInterface.dll",
             L"PowerToys.PowerDisplayModuleInterface.dll",
             L"PowerToys.GrabAndMoveModuleInterface.dll",
+            L"WinUI3Apps/PowerToys.CopyAsUNCExt.dll",
         };
 
         for (auto moduleSubdir : knownModules)

src/runner/settings_window.cpp

@@ -809,6 +809,8 @@ std::string ESettingsWindowNames_to_string(ESettingsWindowNames value)
         return "PowerDisplay";
     case ESettingsWindowNames::GrabAndMove:
         return "GrabAndMove";
+    case ESettingsWindowNames::CopyAsUNC:
+        return "CopyAsUNC";
     default:
     {
         Logger::error(L"Can't convert ESettingsWindowNames value={} to string", static_cast<int>(value));
@@ -956,6 +958,10 @@ ESettingsWindowNames ESettingsWindowNames_from_string(std::string value)
     {
         return ESettingsWindowNames::GrabAndMove;
     }
+    else if (value == "CopyAsUNC")
+    {
+        return ESettingsWindowNames::CopyAsUNC;
+    }
     else
     {
         Logger::error(L"Can't convert string value={} to ESettingsWindowNames", winrt::to_hstring(value));

src/runner/settings_window.h

@@ -38,6 +38,7 @@ enum class ESettingsWindowNames
     ZoomIt,
     PowerDisplay,
     GrabAndMove,
+    CopyAsUNC,
 };
 
 std::string ESettingsWindowNames_to_string(ESettingsWindowNames value);

src/settings-ui/Settings.UI.Library/EnabledModules.cs

@@ -366,6 +366,22 @@ namespace Microsoft.PowerToys.Settings.UI.Library
             }
         }
 
+        private bool copyAsUNC = true;
+
+        [JsonPropertyName("Copy as UNC")]
+        public bool CopyAsUNC
+        {
+            get => copyAsUNC;
+            set
+            {
+                if (copyAsUNC != value)
+                {
+                    LogTelemetryEvent(value);
+                    copyAsUNC = value;
+                }
+            }
+        }
+
         private bool fileLocksmith = true;
 
         [JsonPropertyName("File Locksmith")]

src/settings-ui/Settings.UI/SettingsXAML/Views/PowerPreviewPage.xaml

@@ -279,6 +279,18 @@
                         </tkcontrols:SettingsExpander.Items>
                     </tkcontrols:SettingsExpander>
                 </controls:SettingsGroup>
+                <controls:SettingsGroup x:Uid="FileExplorerPreview_ShellIntegration">
+                    <tkcontrols:SettingsCard
+                        Name="FileExplorerPreviewCopyAsUNCEnable"
+                        x:Uid="FileExplorerPreview_CopyAsUNC_Enable"
+                        HeaderIcon="{ui:FontIcon Glyph=&#xE8C8;}"
+                        IsEnabled="{x:Bind ViewModel.CopyAsUNCIsGpoDisabled, Mode=OneWay, Converter={StaticResource BoolNegationConverter}}">
+                        <ToggleSwitch
+                            x:Uid="ToggleSwitch"
+                            IsEnabled="{x:Bind ViewModel.CopyAsUNCIsGpoEnabled, Mode=OneWay, Converter={StaticResource BoolNegationConverter}}"
+                            IsOn="{x:Bind ViewModel.IsCopyAsUNCEnabled, Mode=TwoWay}" />
+                    </tkcontrols:SettingsCard>
+                </controls:SettingsGroup>
             </StackPanel>
         </controls:SettingsPageControl.ModuleContent>
 

src/settings-ui/Settings.UI/Strings/en-us/Resources.resw

@@ -3774,6 +3774,14 @@ Activate by holding the key for the character you want to add an accent to, then
     <value>Press duration before showing taskbar icon shortcuts (ms)</value>
     <comment>ms = milliseconds</comment>
   </data>
+  <data name="FileExplorerPreview_ShellIntegration.Header" xml:space="preserve">
+    <value>Shell integration</value>
+    <comment>This refers to directly integrating in with the Windows shell</comment>
+  </data>
+  <data name="FileExplorerPreview_CopyAsUNC_Enable.Header" xml:space="preserve">
+    <value>Copy as UNC</value>
+    <comment>Copy as UNC is the name of the utility; do not loc</comment>
+  </data>
   <data name="FileLocksmith.ModuleDescription" xml:space="preserve">
     <value>A Windows shell extension to find out which processes are using the selected files and directories.</value>
     <comment>{Locked="Windows"}</comment>

src/settings-ui/Settings.UI/ViewModels/PowerPreviewViewModel.cs

@@ -225,6 +225,17 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
 
             _stlThumbnailColor = Settings.Properties.StlThumbnailColor.Value;
 
+            _isCopyAsUNCEnabled = GeneralSettingsConfig.Enabled.CopyAsUNC;
+            _copyAsUNCEnabledGpoRuleConfiguration = GPOWrapper.GetConfiguredCopyAsUNCEnabledValue();
+            if (_copyAsUNCEnabledGpoRuleConfiguration == GpoRuleConfigured.Disabled || _copyAsUNCEnabledGpoRuleConfiguration == GpoRuleConfigured.Enabled)
+            {
+                // Get the enabled state from GPO.
+                _copyAsUNCEnabledStateIsGPOConfigured = true;
+                _isCopyAsUNCEnabled = _copyAsUNCEnabledGpoRuleConfiguration == GpoRuleConfigured.Enabled;
+                _copyAsUNCIsGpoEnabled = _copyAsUNCEnabledGpoRuleConfiguration == GpoRuleConfigured.Enabled;
+                _copyAsUNCIsGpoDisabled = _copyAsUNCEnabledGpoRuleConfiguration == GpoRuleConfigured.Disabled;
+            }
+
             _qoiThumbnailEnabledGpoRuleConfiguration = GPOWrapper.GetConfiguredQoiThumbnailsEnabledValue();
             if (_qoiThumbnailEnabledGpoRuleConfiguration == GpoRuleConfigured.Disabled || _qoiThumbnailEnabledGpoRuleConfiguration == GpoRuleConfigured.Enabled)
             {
@@ -1102,6 +1113,56 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
             }
         }
 
+        private GpoRuleConfigured _copyAsUNCEnabledGpoRuleConfiguration;
+        private bool _copyAsUNCEnabledStateIsGPOConfigured;
+        private bool _copyAsUNCIsGpoEnabled;
+        private bool _copyAsUNCIsGpoDisabled;
+        private bool _isCopyAsUNCEnabled;
+
+        public bool IsCopyAsUNCEnabled
+        {
+            get => _isCopyAsUNCEnabled;
+            set
+            {
+                if (_copyAsUNCEnabledStateIsGPOConfigured)
+                {
+                    return;
+                }
+
+                if (_isCopyAsUNCEnabled != value)
+                {
+                    _isCopyAsUNCEnabled = value;
+                    GeneralSettingsConfig.Enabled.CopyAsUNC = value;
+                    OnPropertyChanged(nameof(IsCopyAsUNCEnabled));
+
+                    OutGoingGeneralSettings outgoing = new OutGoingGeneralSettings(GeneralSettingsConfig);
+                    SendConfigMSG(outgoing.ToString());
+                }
+            }
+        }
+
+        public bool IsCopyAsUNCEnabledGpoConfigured
+        {
+            get => _copyAsUNCEnabledStateIsGPOConfigured;
+        }
+
+        public bool CopyAsUNCIsGpoEnabled
+        {
+            get
+            {
+                return _copyAsUNCIsGpoEnabled;
+            }
+        }
+
+        // Used to disable the settings card on forced disabled state.
+        public bool CopyAsUNCIsGpoDisabled
+        {
+            get
+            {
+                return _copyAsUNCIsGpoDisabled;
+            }
+        }
+
         private void RaisePropertyChanged([CallerMemberName] string propertyName = null)
         {
             // Notify UI of property change