diff --git a/PowerToys.sln b/PowerToys.sln
index 6b4e70c89a..396ff8efa7 100644
--- a/PowerToys.sln
+++ b/PowerToys.sln
@@ -154,6 +154,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Wox.Plugin.Folder", "src\mo
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Wox.Launcher", "src\modules\launcher\Wox.Launcher\Wox.Launcher.vcxproj", "{E364F67B-BB12-4E91-B639-355866EBCD8B}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Wox.Plugin.Indexer", "src\modules\launcher\Plugins\Wox.Plugin.Indexer\Wox.Plugin.Indexer.csproj", "{63C3CEA8-51FE-472E-B97C-B58F8B17DD51}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -378,6 +380,14 @@ Global
 		{E364F67B-BB12-4E91-B639-355866EBCD8B}.Release|Any CPU.ActiveCfg = Release|x64
 		{E364F67B-BB12-4E91-B639-355866EBCD8B}.Release|x64.ActiveCfg = Release|x64
 		{E364F67B-BB12-4E91-B639-355866EBCD8B}.Release|x64.Build.0 = Release|x64
+		{63C3CEA8-51FE-472E-B97C-B58F8B17DD51}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{63C3CEA8-51FE-472E-B97C-B58F8B17DD51}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{63C3CEA8-51FE-472E-B97C-B58F8B17DD51}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{63C3CEA8-51FE-472E-B97C-B58F8B17DD51}.Debug|x64.Build.0 = Debug|Any CPU
+		{63C3CEA8-51FE-472E-B97C-B58F8B17DD51}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{63C3CEA8-51FE-472E-B97C-B58F8B17DD51}.Release|Any CPU.Build.0 = Release|Any CPU
+		{63C3CEA8-51FE-472E-B97C-B58F8B17DD51}.Release|x64.ActiveCfg = Release|Any CPU
+		{63C3CEA8-51FE-472E-B97C-B58F8B17DD51}.Release|x64.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -419,6 +429,7 @@ Global
 		{C21BFF9C-2C99-4B5F-B7C9-A5E6DDDB37B0} = {4AFC9975-2456-4C70-94A4-84073C1CED93}
 		{787B8AA6-CA93-4C84-96FE-DF31110AD1C4} = {4AFC9975-2456-4C70-94A4-84073C1CED93}
 		{E364F67B-BB12-4E91-B639-355866EBCD8B} = {C140A3EF-6DBF-4084-9D4C-4EB5A99FEE68}
+		{63C3CEA8-51FE-472E-B97C-B58F8B17DD51} = {4AFC9975-2456-4C70-94A4-84073C1CED93}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {C3A2F9D1-7930-4EF4-A6FC-7EE0A99821D0}
diff --git a/src/common/msi_to_msix_upgrade_lib/msi_to_msix_upgrade_lib.vcxproj b/src/common/msi_to_msix_upgrade_lib/msi_to_msix_upgrade_lib.vcxproj
index baa4a66427..767a9d12c0 100644
--- a/src/common/msi_to_msix_upgrade_lib/msi_to_msix_upgrade_lib.vcxproj
+++ b/src/common/msi_to_msix_upgrade_lib/msi_to_msix_upgrade_lib.vcxproj
@@ -87,7 +87,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
       <PrecompiledHeader>Use</PrecompiledHeader>
-      <WarningLevel>Level4</WarningLevel>
+      <WarningLevel>Level3</WarningLevel>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <SDLCheck>true</SDLCheck>
@@ -129,7 +129,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
       <PrecompiledHeader>Use</PrecompiledHeader>
-      <WarningLevel>Level4</WarningLevel>
+      <WarningLevel>Level3</WarningLevel>
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Images/WindowsIndexerImg.bmp b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Images/WindowsIndexerImg.bmp
new file mode 100644
index 0000000000..78a015715e
Binary files /dev/null and b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Images/WindowsIndexerImg.bmp differ
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Main.cs b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Main.cs
new file mode 100644
index 0000000000..652af40c40
--- /dev/null
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Main.cs
@@ -0,0 +1,128 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Diagnostics;
+using System.Text;
+using System.Threading.Tasks;
+using Wox.Plugin;
+using System.IO;
+using System.ComponentModel;
+using Wox.Infrastructure.Storage;
+using Wox.Plugin.Indexer.SearchHelper;
+using Microsoft.Search.Interop;
+
+namespace Wox.Plugin.Indexer
+{
+    class Main : IPlugin, ISavable, IPluginI18n
+    {
+
+        // This variable contains metadata about the Plugin
+        private PluginInitContext _context;
+
+        // This variable contains information about the context menus
+        private Settings _settings;
+
+        // Contains information about the plugin stored in json format
+        private PluginJsonStorage<Settings> _storage;
+
+        // To access Windows Search functionalities
+        private readonly WindowsSearchAPI _api = new WindowsSearchAPI();
+
+        // To save the configurations of plugins
+        public void Save()
+        {
+            _storage.Save();
+        }
+
+        // This function uses the Windows indexer and returns the list of results obtained
+        public List<Result> Query(Query query)
+        {
+            var results = new List<Result>();
+            if (!string.IsNullOrEmpty(query.Search))
+            {
+                var searchQuery = query.Search;
+                if (_settings.MaxSearchCount <= 0)
+                {
+                    _settings.MaxSearchCount = 50;
+                }
+
+                try
+                {
+                    var searchResultsList = _api.Search(searchQuery, maxCount: _settings.MaxSearchCount).ToList();
+                    foreach (var searchResult in searchResultsList)
+                    {
+                        var path = searchResult.Path;
+
+                        string workingDir = null;
+                        if (_settings.UseLocationAsWorkingDir)
+                            workingDir = Path.GetDirectoryName(path);
+
+                        Result r = new Result();
+                        r.Title = Path.GetFileName(path);
+                        r.SubTitle = path;
+                        r.IcoPath = path;
+                        r.Action = c =>
+                        {
+                            bool hide;
+                            try
+                            {
+                                Process.Start(new ProcessStartInfo
+                                {
+                                    FileName = path,
+                                    UseShellExecute = true,
+                                    WorkingDirectory = workingDir
+                                });
+                                hide = true;
+                            }
+                            catch (Win32Exception)
+                            {
+                                var name = $"Plugin: {_context.CurrentPluginMetadata.Name}";
+                                var msg = "Can't Open this file";
+                                _context.API.ShowMsg(name, msg, string.Empty);
+                                hide = false;
+                            }
+                            return hide;
+                        };
+                        r.ContextData = searchResult;
+                        results.Add(r);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    results.Add(new Result
+                    {
+                        // TODO: Localize the string
+                        Title = "Windows indexer plugin is not running",
+                        IcoPath = "Images\\WindowsIndexerImg.bmp"
+                    });
+                }
+            }
+
+            return results;
+        }
+
+        public void Init(PluginInitContext context)
+        {
+            // initialize the context of the plugin
+            _context = context;
+            _storage = new PluginJsonStorage<Settings>();
+            _settings = _storage.Load();
+        }
+
+        // TODO: Localize the strings
+        // Set the Plugin Title
+        public string GetTranslatedPluginTitle()
+        {
+            return "Windows Indexer Plugin";
+        }
+
+        // TODO: Localize the string
+        // Set the plugin Description
+        public string GetTranslatedPluginDescription()
+        {
+            return "Returns files and folders";
+        }
+
+
+    }
+}
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Properties/AssemblyInfo.cs b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000000..a6f591220c
--- /dev/null
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Properties/AssemblyInfo.cs
@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("Wox.Plugin.Indexer")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("Wox.Plugin.Indexer")]
+[assembly: AssemblyCopyright("Copyright ©  2020")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible
+// to COM components.  If you need to access a type in this assembly from
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("63c3cea8-51fe-472e-b97c-b58f8b17dd51")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/SearchHelper/SearchResult.cs b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/SearchHelper/SearchResult.cs
new file mode 100644
index 0000000000..fc4c0ed770
--- /dev/null
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/SearchHelper/SearchResult.cs
@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Wox.Plugin.Indexer.SearchHelper
+{
+    public class SearchResult
+    {
+        // Contains the Path of the file or folder
+        public string Path { get; set; }
+    }
+}
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/SearchHelper/WindowsSearchAPI.cs b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/SearchHelper/WindowsSearchAPI.cs
new file mode 100644
index 0000000000..64875595a1
--- /dev/null
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/SearchHelper/WindowsSearchAPI.cs
@@ -0,0 +1,99 @@
+using System;
+using System.Collections.Generic;
+using System.Data.OleDb;
+using Microsoft.Search.Interop;
+
+namespace Wox.Plugin.Indexer.SearchHelper
+{
+    public class WindowsSearchAPI
+    {
+        public OleDbConnection conn;
+        public OleDbCommand command;
+        public OleDbDataReader WDSResults;
+
+        public IEnumerable<SearchResult> ExecuteQuery(ISearchQueryHelper queryHelper, string keyword)
+        {
+            // Generate SQL from our parameters, converting the userQuery from AQS->WHERE clause
+            string sqlQuery = queryHelper.GenerateSQLFromUserQuery(keyword);
+
+            // --- Perform the query ---
+            // create an OleDbConnection object which connects to the indexer provider with the windows application
+            using (conn = new OleDbConnection(queryHelper.ConnectionString))
+            {
+                // open the connection
+                conn.Open();
+
+                // now create an OleDB command object with the query we built above and the connection we just opened.
+                using (command = new OleDbCommand(sqlQuery, conn))
+                {
+                    // execute the command, which returns the results as an OleDbDataReader.
+                    using (WDSResults = command.ExecuteReader())
+                    {
+                        while (WDSResults.Read())
+                        {
+                            // col 0 is our path in display format
+                            Console.WriteLine("{0}", WDSResults.GetString(0));
+                            var result = new SearchResult { Path = WDSResults.GetString(0) };
+
+                            yield return result;
+                        }
+                    }
+
+                }
+            }
+        }
+
+
+        public void ModifyQueryHelper(ref ISearchQueryHelper queryHelper, string pattern)
+        {
+            // convert file pattern if it is not '*'. Don't create restriction for '*' as it includes all files.
+            if (pattern != "*")
+            {
+                pattern = pattern.Replace("*", "%");
+                pattern = pattern.Replace("?", "_");
+
+                if (pattern.Contains("%") || pattern.Contains("_"))
+                {
+                    queryHelper.QueryWhereRestrictions += " AND System.FileName LIKE '" + pattern + "' ";
+                }
+                else
+                {
+                    // if there are no wildcards we can use a contains which is much faster as it uses the index
+                    queryHelper.QueryWhereRestrictions += " AND Contains(System.FileName, '" + pattern + "') ";
+                }
+            }
+        }
+
+        public void InitQueryHelper(out ISearchQueryHelper queryHelper, int maxCount)
+        {
+            // This uses the Microsoft.Search.Interop assembly
+            CSearchManager manager = new CSearchManager();
+
+            // SystemIndex catalog is the default catalog in Windows
+            ISearchCatalogManager catalogManager = manager.GetCatalog("SystemIndex");
+
+            // Get the ISearchQueryHelper which will help us to translate AQS --> SQL necessary to query the indexer
+            queryHelper = catalogManager.GetQueryHelper();
+
+            // Set the number of results we want. Don't set this property if all results are needed.
+            queryHelper.QueryMaxResults = maxCount;
+
+            // Set list of columns we want to display, getting the path presently
+            queryHelper.QuerySelectColumns = "System.ItemPathDisplay";
+
+            // Set additional query restriction
+            queryHelper.QueryWhereRestrictions = "AND scope='file:'";
+
+            // Set sorting order 
+            queryHelper.QuerySorting = "System.DateModified DESC";
+        }
+
+        public IEnumerable<SearchResult> Search(string keyword, string pattern = "*", int maxCount = 100)
+        {
+            ISearchQueryHelper queryHelper;
+            InitQueryHelper(out queryHelper, maxCount);
+            ModifyQueryHelper(ref queryHelper, pattern);
+            return ExecuteQuery(queryHelper, keyword);
+        }
+    }
+}
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Settings.cs b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Settings.cs
new file mode 100644
index 0000000000..6fc9bbbf94
--- /dev/null
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Settings.cs
@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Wox.Plugin.Indexer
+{
+    public class Settings
+    {
+        public List<ContextMenu> ContextMenus = new List<ContextMenu>();
+        public int MaxSearchCount { get; set; } = 100;
+        public bool UseLocationAsWorkingDir { get; set; } = false;
+    }
+
+    public class ContextMenu
+    {
+        public string Name { get; set; }
+        public string Command { get; set; }
+        public string Argument { get; set; }
+        public string ImagePath { get; set; }
+    }
+}
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Wox.Plugin.Indexer.csproj b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Wox.Plugin.Indexer.csproj
new file mode 100644
index 0000000000..1a7bdbe8c7
--- /dev/null
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Wox.Plugin.Indexer.csproj
@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{63C3CEA8-51FE-472E-B97C-B58F8B17DD51}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Wox.Plugin.Indexer</RootNamespace>
+    <AssemblyName>Wox.Plugin.Indexer</AssemblyName>
+    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <Deterministic>true</Deterministic>
+    <TargetFrameworkProfile />
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>..\..\..\..\..\x64\Debug\modules\launcher\Plugins\Wox.Plugin.Indexer\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>..\..\..\..\..\x64\Release\modules\launcher\Plugins\Wox.Plugin.Indexer\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="Microsoft.Search.Interop, Version=1.0.0.0, Culture=neutral, PublicKeyToken=9f748985a6e9a7cb, processorArchitecture=MSIL">
+      <HintPath>..\..\..\..\..\packages\tlbimp-Microsoft.Search.Interop.1.0.0\lib\net45\Microsoft.Search.Interop.dll</HintPath>
+      <EmbedInteropTypes>True</EmbedInteropTypes>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Main.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="SearchHelper\SearchResult.cs" />
+    <Compile Include="SearchHelper\WindowsSearchAPI.cs" />
+    <Compile Include="Settings.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+    <None Include="plugin.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\Wox.Infrastructure\Wox.Infrastructure.csproj">
+      <Project>{4fd29318-a8ab-4d8f-aa47-60bc241b8da3}</Project>
+      <Name>Wox.Infrastructure</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\Wox.Plugin\Wox.Plugin.csproj">
+      <Project>{8451ecdd-2ea4-4966-bb0a-7bbc40138e80}</Project>
+      <Name>Wox.Plugin</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup />
+  <ItemGroup>
+    <Content Include="Images\WindowsIndexerImg.bmp">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>
\ No newline at end of file
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/packages.config b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/packages.config
new file mode 100644
index 0000000000..6b77ac3b21
--- /dev/null
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/packages.config
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="tlbimp-Microsoft.Search.Interop" version="1.0.0" targetFramework="net472" />
+</packages>
\ No newline at end of file
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/plugin.json b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/plugin.json
new file mode 100644
index 0000000000..741c57ddcc
--- /dev/null
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/plugin.json
@@ -0,0 +1,12 @@
+{
+  "ID": "2140FC9819AD43A3A616E2735815C27C",
+  "ActionKeyword": "*",
+  "Name": "Windows Indexer",
+  "Description": "Search for files and folders",
+  "Author": "??",
+  "Version": "1.0.0",
+  "Language": "csharp",
+  "Website": "http://www.wox.one/plugin",
+  "ExecuteFileName": "Wox.Plugin.Indexer.dll",
+  "IcoPath": "Images\\WindowsIndexerImg.bmp"
+}
diff --git a/src/modules/launcher/Wox.Infrastructure/Wox.Infrastructure.csproj b/src/modules/launcher/Wox.Infrastructure/Wox.Infrastructure.csproj
index 158a6848a4..0b0a7db25c 100644
--- a/src/modules/launcher/Wox.Infrastructure/Wox.Infrastructure.csproj
+++ b/src/modules/launcher/Wox.Infrastructure/Wox.Infrastructure.csproj
@@ -107,8 +107,8 @@
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
     <PreBuildEvent>
-	xcopy /Y $(PkgPinyin4DotNet)\pinyindb\unicode_to_hanyu_pinyin.txt $(TargetDir)pinyindb\
-	xcopy /Y $(PkgNLog_Schema)\content\NLog.xsd $(TargetDir)
+	xcopy /Y "$(PkgPinyin4DotNet)\pinyindb\unicode_to_hanyu_pinyin.txt" "$(TargetDir)pinyindb\"
+	xcopy /Y "$(PkgNLog_Schema)\content\NLog.xsd" "$(TargetDir)"
 	</PreBuildEvent>
   </PropertyGroup>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
diff --git a/src/modules/launcher/Wox.Test/Plugins/WindowsIndexerTest.cs b/src/modules/launcher/Wox.Test/Plugins/WindowsIndexerTest.cs
new file mode 100644
index 0000000000..9df2aa5892
--- /dev/null
+++ b/src/modules/launcher/Wox.Test/Plugins/WindowsIndexerTest.cs
@@ -0,0 +1,145 @@
+using NUnit.Framework;
+using System;
+using System.Collections.Generic;
+using System.Data.OleDb;
+using Microsoft.Search.Interop;
+using Wox.Plugin.Indexer.SearchHelper;
+
+namespace Wox.Test.Plugins
+{
+
+    [TestFixture]
+    public class WindowsIndexerTest
+    {
+        private WindowsSearchAPI _api = new WindowsSearchAPI();
+
+        [Test]
+        public void InitQueryHelper_ShouldInitialize_WhenFunctionIsCalled()
+        {
+            // Arrange
+            int maxCount = 10;
+            ISearchQueryHelper queryHelper = null;
+
+            // Act
+            _api.InitQueryHelper(out queryHelper, maxCount);
+
+            // Assert
+            Assert.IsNotNull(queryHelper);
+            Assert.AreEqual(queryHelper.QueryMaxResults, maxCount);
+        }
+
+        [Test]
+        public void ModifyQueryHelper_ShouldSetQueryHelper_WhenPatternIsAsterisk()
+        {
+            // Arrange
+            ISearchQueryHelper queryHelper;
+            String pattern = "*";
+            _api.InitQueryHelper(out queryHelper, 10);
+
+            // Act
+            _api.ModifyQueryHelper(ref queryHelper, pattern);
+
+            // Assert
+            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("LIKE"));
+            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("Contains"));
+        }
+
+        [Test]
+        public void ModifyQueryHelper_ShouldSetQueryHelper_WhenPatternContainsAsterisk()
+        {
+            // Arrange
+            ISearchQueryHelper queryHelper;
+            String pattern = "tt*^&)";
+            _api.InitQueryHelper(out queryHelper, 10);
+
+            // Act
+            _api.ModifyQueryHelper(ref queryHelper, pattern);
+
+            // Assert
+            Assert.IsTrue(queryHelper.QueryWhereRestrictions.Contains("LIKE"));
+            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("Contains"));
+        }
+
+        [Test]
+        public void ModifyQueryHelper_ShouldSetQueryHelper_WhenPatternContainsPercent()
+        {
+            // Arrange
+            ISearchQueryHelper queryHelper;
+            String pattern = "tt%^&)";
+            _api.InitQueryHelper(out queryHelper, 10);
+
+            // Act
+            _api.ModifyQueryHelper(ref queryHelper, pattern);
+
+            // Assert
+            Assert.IsTrue(queryHelper.QueryWhereRestrictions.Contains("LIKE"));
+            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("Contains"));
+        }
+
+        [Test]
+        public void ModifyQueryHelper_ShouldSetQueryHelper_WhenPatternContainsUnderScore()
+        {
+            // Arrange
+            ISearchQueryHelper queryHelper;
+            String pattern = "tt_^&)";
+            _api.InitQueryHelper(out queryHelper, 10);
+
+            // Act
+            _api.ModifyQueryHelper(ref queryHelper, pattern);
+
+            // Assert
+            Assert.IsTrue(queryHelper.QueryWhereRestrictions.Contains("LIKE"));
+            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("Contains"));
+        }
+
+        [Test]
+        public void ModifyQueryHelper_ShouldSetQueryHelper_WhenPatternContainsQuestionMark()
+        {
+            // Arrange
+            ISearchQueryHelper queryHelper;
+            String pattern = "tt?^&)";
+            _api.InitQueryHelper(out queryHelper, 10);
+
+            // Act
+            _api.ModifyQueryHelper(ref queryHelper, pattern);
+
+            // Assert
+            Assert.IsTrue(queryHelper.QueryWhereRestrictions.Contains("LIKE"));
+            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("Contains"));
+        }
+
+        [Test]
+        public void ModifyQueryHelper_ShouldSetQueryHelper_WhenPatternDoesNotContainSplSymbols()
+        {
+            // Arrange
+            ISearchQueryHelper queryHelper;
+            String pattern = "tt^&)bc";
+            _api.InitQueryHelper(out queryHelper, 10);
+
+            // Act
+            _api.ModifyQueryHelper(ref queryHelper, pattern);
+
+            // Assert
+            Assert.IsFalse(queryHelper.QueryWhereRestrictions.Contains("LIKE"));
+            Assert.IsTrue(queryHelper.QueryWhereRestrictions.Contains("Contains"));
+        }
+
+        [Test]
+        public void ExecuteQuery_ShouldDisposeAllConnections_AfterFunctionCall()
+        {
+            // Arrange
+            ISearchQueryHelper queryHelper;
+            _api.InitQueryHelper(out queryHelper, 10);
+            _api.ModifyQueryHelper(ref queryHelper, "*");
+            string keyword = "test";
+
+            // Act
+            _api.ExecuteQuery(queryHelper, keyword);
+
+            // Assert
+            Assert.IsNull(_api.conn);
+            Assert.IsNull(_api.command);
+            Assert.IsNull(_api.WDSResults);
+        }
+    }
+}
diff --git a/src/modules/launcher/Wox.Test/Wox.Test.csproj b/src/modules/launcher/Wox.Test/Wox.Test.csproj
index 1de1a7880b..e656fca226 100644
--- a/src/modules/launcher/Wox.Test/Wox.Test.csproj
+++ b/src/modules/launcher/Wox.Test/Wox.Test.csproj
@@ -38,6 +38,7 @@
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Data" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="..\SolutionAssemblyInfo.cs">
@@ -45,10 +46,15 @@
     </Compile>
     <Compile Include="FuzzyMatcherTest.cs" />
     <Compile Include="Plugins\PluginInitTest.cs" />
+    <Compile Include="Plugins\WindowsIndexerTest.cs" />
     <Compile Include="QueryBuilderTest.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\Plugins\Wox.Plugin.Indexer\Wox.Plugin.Indexer.csproj">
+      <Project>{63c3cea8-51fe-472e-b97c-b58f8b17dd51}</Project>
+      <Name>Wox.Plugin.Indexer</Name>
+    </ProjectReference>
     <ProjectReference Include="..\Wox.Core\Wox.Core.csproj">
       <Project>{B749F0DB-8E75-47DB-9E5E-265D16D0C0D2}</Project>
       <Name>Wox.Core</Name>
@@ -72,6 +78,9 @@
     <PackageReference Include="NUnit3TestAdapter">
       <Version>3.15.1</Version>
     </PackageReference>
+    <PackageReference Include="tlbimp-Microsoft.Search.Interop">
+      <Version>1.0.0</Version>
+    </PackageReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it.