diff --git a/README.md b/README.md
index 54008639..99b0ee46 100644
--- a/README.md
+++ b/README.md
@@ -64,7 +64,7 @@ You can follow development on our [Discord server](https://moonlight-stream.org/
 2. Run `git submodule update --init --recursive` from within `moonlight-qt/`
 3. Open the project in Qt Creator or build from qmake on the command line.
     * To build a binary for use on non-development machines, use the scripts in the `scripts` folder.
-        * For Windows builds, use `scripts\generate-installers.bat`. Execute this script from the root of the repository within a Qt command prompt. Ensure WiX and 7-Zip binary directories are in your `%PATH%`.
+        * For Windows builds, use `scripts\build-arch.bat` and `scripts\generate-bundle.bat`. Execute these scripts from the root of the repository within a Qt command prompt. Ensure WiX and 7-Zip binary directories are in your `%PATH%`.
         * For macOS builds, use `scripts/generate-dmg.sh`. Execute this script from the root of the repository and ensure Qt's `bin` folder is in your `$PATH`.
         * For Steam Link builds, run `scripts/build-steamlink-app.sh` from the root of the repository.
     * To build from the command line for development use, run `qmake moonlight-qt.pro` then `make debug` or `make release`
diff --git a/appveyor.yml b/appveyor.yml
index ab0901a1..afa20863 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -5,13 +5,9 @@ clone_depth: 1
 environment:
   matrix:
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      QTDIR: C:\Qt\5.15\msvc2019_64
-      ARCH: x64
+      QTDIR: C:\Qt\5.15
     - APPVEYOR_BUILD_WORKER_IMAGE: macOS
       BUILD_TARGET: macos
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      QTDIR: C:\Qt\5.15\msvc2019
-      ARCH: x86
     - APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu1604
       BUILD_TARGET: steamlink
     - APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu1604
@@ -37,13 +33,16 @@ install:
 
 before_build:
   - 'git submodule update --init --recursive'
-  - cmd: 'set PATH=%PATH%;%QTDIR%\bin;%ProgramFiles(x86)%\WiX Toolset v3.11\bin'
+  - cmd: 'set OLDPATH=%PATH%'
   - cmd: 'set /p VERSION=<app\version.txt'
   - sh: 'export VERSION=`cat app/version.txt`'
 
 build_script:
-  - cmd: 'scripts\generate-installers.bat Debug %ARCH%'
-  - cmd: 'scripts\generate-installers.bat Release %ARCH%'
+  - cmd: 'set PATH=%OLDPATH%;%QTDIR%\msvc2019_64\bin;%ProgramFiles(x86)%\WiX Toolset v3.11\bin'
+  - cmd: 'scripts\build-arch.bat Release x64'
+  - cmd: 'set PATH=%OLDPATH%;%QTDIR%\msvc2019\bin;%ProgramFiles(x86)%\WiX Toolset v3.11\bin'
+  - cmd: 'scripts\build-arch.bat Release x86'
+  - cmd: 'scripts\generate-bundle.bat Release'
   - sh: '[ "$BUILD_TARGET" != linux ] || source /opt/qt514/bin/qt514-env.sh'
   - sh: '[ "$BUILD_TARGET" != linux ] || PATH=$PATH:$HOME/bin scripts/build-appimage.sh'
   - sh: '[ "$BUILD_TARGET" != macos ] || scripts/generate-dmg.sh Release'
diff --git a/scripts/generate-installers.bat b/scripts/build-arch.bat
similarity index 87%
rename from scripts/generate-installers.bat
rename to scripts/build-arch.bat
index 74bc8d5f..51ef9dbf 100644
--- a/scripts/generate-installers.bat
+++ b/scripts/build-arch.bat
@@ -177,26 +177,6 @@ if "%SIGN%"=="1" (
     if !ERRORLEVEL! NEQ 0 goto Error
 )
 
-echo Building bundle
-rem Bundles are always x86 binaries
-msbuild %SOURCE_ROOT%\wix\MoonlightSetup\MoonlightSetup.wixproj /p:Configuration=%BUILD_CONFIG% /p:Platform=x86
-if !ERRORLEVEL! NEQ 0 goto Error
-
-if "%SIGN%"=="1" (
-    echo Signing bundle
-    "%WIX%\bin\insignia" -ib %INSTALLER_FOLDER%\MoonlightSetup.exe -o %BUILD_FOLDER%\engine.exe
-    if !ERRORLEVEL! NEQ 0 goto Error
-    signtool %SIGNTOOL_PARAMS% %BUILD_FOLDER%\engine.exe
-    if !ERRORLEVEL! NEQ 0 goto Error
-    "%WIX%\bin\insignia" -ab %BUILD_FOLDER%\engine.exe %INSTALLER_FOLDER%\MoonlightSetup.exe -o %INSTALLER_FOLDER%\MoonlightSetup.exe
-    if !ERRORLEVEL! NEQ 0 goto Error
-    signtool %SIGNTOOL_PARAMS% %INSTALLER_FOLDER%\MoonlightSetup.exe
-    if !ERRORLEVEL! NEQ 0 goto Error
-)
-
-rem Rename the installer to match the publishing convention
-ren %INSTALLER_FOLDER%\MoonlightSetup.exe MoonlightSetup-%ARCH%-%VERSION%.exe
-
 echo Building portable package
 rem This must be done after WiX harvesting and signing, since the VCRT dlls are MS signed
 rem and should not be harvested for inclusion in the full installer
@@ -208,7 +188,7 @@ if !ERRORLEVEL! NEQ 0 goto Error
 7z a %INSTALLER_FOLDER%\MoonlightPortable-%ARCH%-%VERSION%.zip %DEPLOY_FOLDER%\*
 if !ERRORLEVEL! NEQ 0 goto Error
 
-echo Build successful for Moonlight v%VERSION%!
+echo Build successful for Moonlight v%VERSION% %ARCH% binaries!
 exit /b 0
 
 :Error
diff --git a/scripts/generate-bundle.bat b/scripts/generate-bundle.bat
new file mode 100644
index 00000000..1d1c7408
--- /dev/null
+++ b/scripts/generate-bundle.bat
@@ -0,0 +1,93 @@
+@echo off
+setlocal enableDelayedExpansion
+
+rem Run from Qt command prompt with working directory set to root of repo
+
+set BUILD_CONFIG=%1
+
+rem Convert to lower case for windeployqt
+if /I "%BUILD_CONFIG%"=="debug" (
+    set BUILD_CONFIG=debug
+    set WIX_MUMS=10
+) else (
+    if /I "%BUILD_CONFIG%"=="release" (
+        set BUILD_CONFIG=release
+        set WIX_MUMS=10
+    ) else (
+        if /I "%BUILD_CONFIG%"=="signed-release" (
+            set BUILD_CONFIG=release
+            set SIGN=1
+            set MUST_DEPLOY_SYMBOLS=1
+
+            rem Fail if there are unstaged changes
+            git diff-index --quiet HEAD --
+            if !ERRORLEVEL! NEQ 0 (
+                echo Signed release builds must not have unstaged changes!
+                exit /b 1
+            )
+        ) else (
+            echo Invalid build configuration - expected 'debug' or 'release'
+            exit /b 1
+        )
+    )
+)
+
+set SIGNTOOL_PARAMS=sign /tr http://timestamp.digicert.com /td sha256 /fd sha256 /sha1 1B3C676E831A94EC0327C3347EB32C68C26B3A67 /v
+
+set BUILD_ROOT=%cd%\build
+set SOURCE_ROOT=%cd%
+set BUILD_FOLDER=%BUILD_ROOT%\build-%BUILD_CONFIG%
+set INSTALLER_FOLDER=%BUILD_ROOT%\installer-%BUILD_CONFIG%
+set /p VERSION=<%SOURCE_ROOT%\app\version.txt
+
+rem Ensure that all architectures have been built before the final bundle
+if not exist "%BUILD_ROOT%\build-x86-%BUILD_CONFIG%\Moonlight.msi" (
+    echo Unable to build bundle - missing binaries for %BUILD_CONFIG% x86
+    echo You must run 'build-arch.bat %BUILD_CONFIG% x86' first
+    exit /b 1
+)
+if not exist "%BUILD_ROOT%\build-x64-%BUILD_CONFIG%\Moonlight.msi" (
+    echo Unable to build bundle - missing binaries for %BUILD_CONFIG% x64
+    echo You must run 'build-arch.bat %BUILD_CONFIG% x64' first
+    exit /b 1
+)
+
+echo Cleaning output directories
+rmdir /s /q %BUILD_FOLDER%
+rmdir /s /q %INSTALLER_FOLDER%
+mkdir %BUILD_FOLDER%
+mkdir %INSTALLER_FOLDER%
+
+rem Find Visual Studio and run vcvarsall.bat
+set VSWHERE="%SOURCE_ROOT%\scripts\vswhere.exe"
+for /f "usebackq delims=" %%i in (`%VSWHERE% -latest -property installationPath`) do (
+    call "%%i\VC\Auxiliary\Build\vcvarsall.bat" x86
+)
+if !ERRORLEVEL! NEQ 0 goto Error
+
+echo Building bundle
+rem Bundles are always x86 binaries
+msbuild %SOURCE_ROOT%\wix\MoonlightSetup\MoonlightSetup.wixproj /p:Configuration=%BUILD_CONFIG% /p:Platform=x86
+if !ERRORLEVEL! NEQ 0 goto Error
+
+if "%SIGN%"=="1" (
+    echo Signing bundle
+    "%WIX%\bin\insignia" -ib %INSTALLER_FOLDER%\MoonlightSetup.exe -o %BUILD_FOLDER%\engine.exe
+    if !ERRORLEVEL! NEQ 0 goto Error
+    signtool %SIGNTOOL_PARAMS% %BUILD_FOLDER%\engine.exe
+    if !ERRORLEVEL! NEQ 0 goto Error
+    "%WIX%\bin\insignia" -ab %BUILD_FOLDER%\engine.exe %INSTALLER_FOLDER%\MoonlightSetup.exe -o %INSTALLER_FOLDER%\MoonlightSetup.exe
+    if !ERRORLEVEL! NEQ 0 goto Error
+    signtool %SIGNTOOL_PARAMS% %INSTALLER_FOLDER%\MoonlightSetup.exe
+    if !ERRORLEVEL! NEQ 0 goto Error
+)
+
+rem Rename the installer to match the publishing convention
+ren %INSTALLER_FOLDER%\MoonlightSetup.exe MoonlightSetup-%VERSION%.exe
+
+echo Build successful for Moonlight v%VERSION% installer!
+exit /b 0
+
+:Error
+echo Build failed!
+exit /b !ERRORLEVEL!
diff --git a/wix/MoonlightSetup/Bundle.wxs b/wix/MoonlightSetup/Bundle.wxs
index 4fc7a005..c03bc4f6 100644
--- a/wix/MoonlightSetup/Bundle.wxs
+++ b/wix/MoonlightSetup/Bundle.wxs
@@ -13,7 +13,7 @@
      xmlns:util="http://schemas.microsoft.com/wix/UtilExtension">
 
   <Bundle Name="Moonlight Game Streaming Client"
-          Version="!(bind.PackageVersion.Moonlight)"
+          Version="!(bind.PackageVersion.Moonlight_x64)"
           Manufacturer="Moonlight Game Streaming Project"
           UpgradeCode="466fa35d-4be4-40ef-9ce5-afadc3b63bc5"
           HelpUrl="https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide"
@@ -25,24 +25,10 @@
       <![CDATA[VersionNT >= v6.1]]>
     </bal:Condition>
 
-    <?if $(env.ARCH) ~= x64 ?>
-      <bal:Condition Message="This Moonlight installer requires a 64-bit (x64) OS. Please download the 32-bit (x86) installer.">
-        VersionNT64
-      </bal:Condition>
-    <?elseif $(env.ARCH) ~= x86 ?>
-      <bal:Condition Message="This Moonlight installer requires a 32-bit (x86) OS. Please download the 64-bit (x64) installer.">
-        NOT VersionNT64
-      </bal:Condition>
-    <?endif ?>
-
     <!-- HACK: Force replacement of lower versioned files too. This is only safe because we don't install any shared files -->
     <Variable Name="REINSTALLMODE" bal:Overridable="yes" Value="dmus" />
 
-    <?if $(env.ARCH) ~= x64 ?>
-      <Variable Name="InstallFolder" Type="string" Value="[ProgramFiles64Folder]Moonlight Game Streaming" />
-    <?elseif $(env.ARCH) ~= x86 ?>
-      <Variable Name="InstallFolder" Type="string" Value="[ProgramFilesFolder]Moonlight Game Streaming" />
-    <?endif ?>
+    <Variable Name="InstallFolder" Type="string" Value="[ProgramFiles6432Folder]Moonlight Game Streaming" />
 
     <!-- Define "Add desktop shortcut" -checkbox's state by defining a variable
          which has same name as the checkbox has. Value 1 means that checkbox
@@ -123,7 +109,19 @@
         <ExitCode Value="1638" Behavior="success" />
       </ExePackage>
 
-      <MsiPackage Id="Moonlight" SourceFile="$(var.Moonlight.TargetPath)" Vital="yes">
+      <MsiPackage Id="Moonlight_x86"
+                  SourceFile="$(env.BUILD_ROOT)\build-x86-$(env.BUILD_CONFIG)\Moonlight.msi"
+                  InstallCondition="NOT VersionNT64"
+                  Vital="yes">
+        <MsiProperty Name="INSTALLFOLDER" Value="[InstallFolder]" />
+        <MsiProperty Name="REINSTALLMODE" Value="[REINSTALLMODE]" />
+        <MsiProperty Name="ADDDESKTOPSHORTCUT" Value="[AddDesktopShortcutCheckbox]" />
+      </MsiPackage>
+
+      <MsiPackage Id="Moonlight_x64"
+                  SourceFile="$(env.BUILD_ROOT)\build-x64-$(env.BUILD_CONFIG)\Moonlight.msi"
+                  InstallCondition="VersionNT64"
+                  Vital="yes">
         <MsiProperty Name="INSTALLFOLDER" Value="[InstallFolder]" />
         <MsiProperty Name="REINSTALLMODE" Value="[REINSTALLMODE]" />
         <MsiProperty Name="ADDDESKTOPSHORTCUT" Value="[AddDesktopShortcutCheckbox]" />
diff --git a/wix/MoonlightSetup/MoonlightSetup.wixproj b/wix/MoonlightSetup/MoonlightSetup.wixproj
index 47dc9639..a5d4358c 100644
--- a/wix/MoonlightSetup/MoonlightSetup.wixproj
+++ b/wix/MoonlightSetup/MoonlightSetup.wixproj
@@ -28,16 +28,6 @@
       <Name>WixUtilExtension</Name>
     </WixExtension>
   </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="..\Moonlight\Moonlight.wixproj">
-      <Name>Moonlight</Name>
-      <Project>{8468ef94-3bb8-47a5-af15-0e314afe664d}</Project>
-      <Private>True</Private>
-      <DoNotHarvest>True</DoNotHarvest>
-      <RefProjectOutputGroups>Binaries;Content;Satellites</RefProjectOutputGroups>
-      <RefTargetDir>INSTALLFOLDER</RefTargetDir>
-    </ProjectReference>
-  </ItemGroup>
   <Import Project="$(WixTargetsPath)" Condition=" '$(WixTargetsPath)' != '' " />
   <Import Project="$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Wix.targets" Condition=" '$(WixTargetsPath)' == '' AND Exists('$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Wix.targets') " />
   <Target Name="EnsureWixToolsetInstalled" Condition=" '$(WixTargetsImported)' != 'true' ">