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Fix: Install CommandPalette.Extensions.winmd to WinUI3Apps for COM marshalling (#47210)

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## Summary

Follow-up fix for #47177. Installs `CommandPalette.Extensions.winmd` to
the `WinUI3Apps\` directory (ExternalLocation) instead of the root
install folder.

## Problem

PR #47177 moved the sparse package's `ExternalLocation` from root to
`WinUI3Apps\`, but the `CommandPalette.Extensions.winmd` was still
installed to root via `DirectoryRef=INSTALLFOLDER`. The WinRT runtime
needs this winmd in the ExternalLocation directory for COM proxy/stub
creation during cross-process CmdPal extension activation. Without it,
`CoCreateInstance` returns `E_NOINTERFACE` and the PowerToys extension
fails to load in Command Palette.

## Fix

Split the `BaseApplications.wxs` `DirectoryRef` into two blocks:
- **winmd component** -> `WinUI3AppsInstallFolder` (for WinRT COM
marshalling)
- **auto-generated components** -> `INSTALLFOLDER` (unchanged, avoids
ICE30 conflict with `WinUI3ApplicationsFiles`)

## Validation

- [x] Local WiX compilation: no ICE30 errors
- [x] ADO CI build 145429943 (v0.99.1): passed
- [x] Manual verification on 25H2: CmdPal loads 55 commands after winmd
placed in WinUI3Apps

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Boliang Zhang
2026-04-25 23:22:49 +08:00
committed by GitHub
parent 8536d7b1cd
commit e5b0667397
1 changed files with 4 additions and 1 deletions
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5
installer/PowerToysSetupVNext/BaseApplications.wxs
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@@ -6,13 +6,16 @@
<?define BaseApplicationsFilesPath=$(var.BinDir)\?>
<Fragment>
<DirectoryRef Id="INSTALLFOLDER">
<!-- winmd must be in WinUI3Apps (ExternalLocation) for WinRT COM proxy/stub resolution -->
<DirectoryRef Id="WinUI3AppsInstallFolder">
<Component Id="Microsoft_CommandPalette_Extensions_winmd" Guid="304AD25A-A986-4058-940E-61DB79EBD78C" Bitness="always64">
<RegistryKey Root="$(var.RegistryScope)" Key="Software\Classes\powertoys\components">
<RegistryValue Type="string" Name="Microsoft_CommandPalette_Extensions_winmd" Value="" KeyPath="yes" />
</RegistryKey>
<File Id="Microsoft.CommandPalette.Extensions.winmd" Source="$(var.BinDir)WinUI3Apps\Microsoft.CommandPalette.Extensions.winmd" />
</Component>
</DirectoryRef>
<DirectoryRef Id="INSTALLFOLDER">
<!-- Generated by generateFileComponents.ps1 -->
<!--BaseApplicationsFiles_Component_Def-->
</DirectoryRef>