Add ARM64 support (#641)

* Add ARM64 build configurations to projects * StartMenu: add ARM64 support * Add support for IAT hooking on ARM64 * Add ARM64 support to Classic IE * Add ARM64 support to installer NB: WiX 3.14.0.3910 or higher is required to create the MSI * Revert whitespace change * Separate x86/x64 and ARM64 installers * Change suffix of ARM64 binaries * Put also ARM64 MSI to final installer * Fix sln * Build some DLLs as ARM64X These are meant to be loaded to both x64 and ARM64 processes. We will compile them as ARM64X (when building for ARM64). That way they will contain both x64 and ARM64 code paths. https://learn.microsoft.com/en-us/windows/arm/arm64x-pe * Make sure x64 installer cannot be installed on ARM64 In case if somebody manually tries to install x64 MSI on ARM64. This is not supported/working scenario. --------- Co-authored-by: ge0rdi <ge0rdi@users.noreply.github.com>
2026-04-11 17:37:22 +10:00 · 2025-05-08 10:14:56 +02:00
parent 146c27ecd2
commit 58b909037f
25 changed files with 636 additions and 48 deletions
--- a/Src/Setup/BuildBinaries.bat
+++ b/Src/Setup/BuildBinaries.bat
@@ -1,6 +1,7 @@
 if exist Output rd /Q /S Output
 md Output
 md Output\x64
+md Output\ARM64

 echo -- Compiling

@@ -9,13 +10,18 @@ for /f "usebackq tokens=*" %%i in (`"%ProgramFiles(x86)%\Microsoft Visual Studio
 REM Restore NuGet packages
 "%MSBuildDir%MSBuild.exe" ..\OpenShell.sln /m /t:Restore -p:RestorePackagesConfig=true /verbosity:quiet /nologo

-REM ********* Build 64-bit solution
-echo --- 64bit
+REM ********* Build x64 solution
+echo --- x64
 "%MSBuildDir%MSBuild.exe" ..\OpenShell.sln /m /t:Rebuild /p:Configuration="Setup" /p:Platform="x64" /verbosity:quiet /nologo
@if ERRORLEVEL 1 exit /b 1

+REM ********* Build ARM64 solution
+echo --- ARM64
+"%MSBuildDir%MSBuild.exe" ..\OpenShell.sln /m /t:Rebuild /p:Configuration="Setup" /p:Platform="ARM64" /verbosity:quiet /nologo
+if ERRORLEVEL 1 exit /b 1
+
 REM ********* Build 32-bit solution (must be after 64-bit)
-echo --- 32bit
+echo --- x86
 "%MSBuildDir%MSBuild.exe" ..\OpenShell.sln /m /t:Rebuild /p:Configuration="Setup" /p:Platform="Win32" /verbosity:quiet /nologo
@if ERRORLEVEL 1 exit /b 1

@@ -45,6 +51,13 @@ copy /B ..\..\build\bin\Release\Update.exe Output > nul
 copy /B ..\..\build\bin\Release\DesktopToasts.dll Output > nul
 copy /B ..\..\build\bin\Release\SetupHelper.exe Output > nul

+copy /B ..\..\build\bin\SetupARM64\ClassicExplorer64.dll Output\ARM64 > nul
+copy /B ..\..\build\bin\SetupARM64\ClassicIEDLL_64.dll Output\ARM64 > nul
+copy /B ..\..\build\bin\SetupARM64\ClassicIE_64.exe Output\ARM64 > nul
+copy /B ..\..\build\bin\SetupARM64\StartMenu.exe Output\ARM64 > nul
+copy /B ..\..\build\bin\SetupARM64\StartMenuDLL.dll Output\ARM64 > nul
+copy /B ..\..\build\bin\SetupARM64\StartMenuHelper64.dll Output\ARM64 > nul
+
 copy /B ..\..\build\bin\Setup64\ClassicExplorer64.dll Output\x64 > nul
 copy /B ..\..\build\bin\Setup64\ClassicIEDLL_64.dll Output\x64 > nul
 copy /B ..\..\build\bin\Setup64\ClassicIE_64.exe Output\x64 > nul
@@ -73,6 +86,7 @@ copy /B "..\..\build\bin\Skins\Immersive.skin7" Output > nul
 REM ********* Collect debug info
 md Output\PDB32
 md Output\PDB64
+md Output\PDBARM64

 REM Explorer 32
 copy /B ..\..\build\bin\Setup\ClassicExplorer32.pdb Output\PDB32 > nul
@@ -84,6 +98,10 @@ REM Explorer 64
 copy /B ..\..\build\bin\Setup64\ClassicExplorer64.pdb Output\PDB64 > nul
 copy /B Output\x64\ClassicExplorer64.dll Output\PDB64 > nul

+REM Explorer ARM64
+copy /B ..\..\build\bin\SetupARM64\ClassicExplorer64.pdb Output\PDBARM64 > nul
+copy /B Output\ARM64\ClassicExplorer64.dll Output\PDBARM64 > nul
+
 REM IE 32
 copy /B ..\..\build\bin\Setup\ClassicIEDLL_32.pdb Output\PDB32 > nul
 copy /B Output\ClassicIEDLL_32.dll Output\PDB32 > nul
@@ -96,6 +114,12 @@ copy /B Output\x64\ClassicIEDLL_64.dll Output\PDB64 > nul
 copy /B ..\..\build\bin\Setup64\ClassicIE_64.pdb Output\PDB64 > nul
 copy /B Output\x64\ClassicIE_64.exe Output\PDB64 > nul

+REM IE ARM64
+copy /B ..\..\build\bin\SetupARM64\ClassicIEDLL_64.pdb Output\PDBARM64 > nul
+copy /B Output\ARM64\ClassicIEDLL_64.dll Output\PDBARM64 > nul
+copy /B ..\..\build\bin\SetupARM64\ClassicIE_64.pdb Output\PDBARM64 > nul
+copy /B Output\ARM64\ClassicIE_64.exe Output\PDBARM64 > nul
+
 REM Menu 32
 copy /B ..\..\build\bin\Setup\StartMenu.pdb Output\PDB32 > nul
 copy /B Output\StartMenu.exe Output\PDB32 > nul
@@ -116,6 +140,13 @@ copy /B Output\x64\StartMenuDLL.dll Output\PDB64 > nul
 copy /B ..\..\build\bin\Setup64\StartMenuHelper64.pdb Output\PDB64 > nul
 copy /B Output\x64\StartMenuHelper64.dll Output\PDB64 > nul

+REM Menu ARM64
+copy /B ..\..\build\bin\SetupARM64\StartMenu.pdb Output\PDBARM64 > nul
+copy /B Output\ARM64\StartMenu.exe Output\PDBARM64 > nul
+copy /B ..\..\build\bin\SetupARM64\StartMenuDLL.pdb Output\PDBARM64 > nul
+copy /B Output\ARM64\StartMenuDLL.dll Output\PDBARM64 > nul
+copy /B ..\..\build\bin\SetupARM64\StartMenuHelper64.pdb Output\PDBARM64 > nul
+copy /B Output\ARM64\StartMenuHelper64.dll Output\PDBARM64 > nul

 REM ********* Source Index PDBs

@@ -140,6 +171,14 @@ if exist %PDBSTR_PATH% (
 			exit /b 1
 		)
 	)
+
+	for %%f in (Output\PDBARM64\*.pdb) do (
+		%PDBSTR_PATH% -w -p:%%f -s:srcsrv -i:Output\pdbstr.txt
+		if not ERRORLEVEL 0 (
+			echo Error adding source index to PDB
+			exit /b 1
+		)
+	)
 )

 REM ********* Prepare symbols
@@ -148,11 +187,13 @@ set SYMSTORE_PATH="C:\Program Files (x86)\Windows Kits\10\Debuggers\x64\symstore

 %SYMSTORE_PATH% add /r /f Output\PDB32 /s Output\symbols /t OpenShell -:NOREFS > nul
 %SYMSTORE_PATH% add /r /f Output\PDB64 /s Output\symbols /t OpenShell -:NOREFS > nul
+%SYMSTORE_PATH% add /r /f Output\PDBARM64 /s Output\symbols /t OpenShell -:NOREFS > nul
 rd /Q /S Output\symbols\000Admin > nul
 del Output\symbols\pingme.txt > nul

 rd /Q /S Output\PDB32
 rd /Q /S Output\PDB64
+rd /Q /S Output\PDBARM64

 REM ********* Build ADMX
 echo --- ADMX
--- a/Src/Setup/BuildInstaller.bat
+++ b/Src/Setup/BuildInstaller.bat
@@ -36,9 +36,9 @@ md Temp
 	@set /a "CS_VERSION_NUM=%%A<<24|%%B<<16|%%C"
 )

-REM ********* Build 32-bit MSI
-echo --- 32bit MSI
-candle Setup.wxs -nologo -out Temp\Setup32.wixobj -ext WixUIExtension -ext WixUtilExtension -dx64=0 -dCS_LANG_FOLDER=%CS_LANG_FOLDER% -dCS_LANG_NAME=%CS_LANG_NAME%
+REM ********* Build x86 MSI
+echo --- x86 MSI
+candle Setup.wxs -nologo -out Temp\Setup32.wixobj -ext WixUIExtension -ext WixUtilExtension -dx64=0 -dARM64=0 -dCS_LANG_FOLDER=%CS_LANG_FOLDER% -dCS_LANG_NAME=%CS_LANG_NAME%
@if ERRORLEVEL 1 exit /b 1

@REM We need to suppress ICE38 and ICE43 because they apply only to per-user installation. We only support per-machine installs
@@ -46,10 +46,9 @@ candle Setup.wxs -nologo -out Temp\Setup32.wixobj -ext WixUIExtension -ext WixUt
 light Temp\Setup32.wixobj -nologo -out Temp\Setup32.msi -ext WixUIExtension -ext WixUtilExtension -loc ..\Localization\%CS_LANG_FOLDER%\OpenShellText-%CS_LANG_NAME%.wxl -loc ..\Localization\%CS_LANG_FOLDER%\WixUI_%CS_LANG_NAME%.wxl -sice:ICE38 -sice:ICE43 -sice:ICE09
@if ERRORLEVEL 1 exit /b 1

-
-REM ********* Build 64-bit MSI
-echo --- 64bit MSI
-candle Setup.wxs -nologo -out Temp\Setup64.wixobj -ext WixUIExtension -ext WixUtilExtension -dx64=1 -dCS_LANG_FOLDER=%CS_LANG_FOLDER% -dCS_LANG_NAME=%CS_LANG_NAME%
+REM ********* Build x64 MSI
+echo --- x64 MSI
+candle Setup.wxs -nologo -out Temp\Setup64.wixobj -ext WixUIExtension -ext WixUtilExtension -dx64=1 -dARM64=0 -dCS_LANG_FOLDER=%CS_LANG_FOLDER% -dCS_LANG_NAME=%CS_LANG_NAME%
@if ERRORLEVEL 1 exit /b 1

@REM We need to suppress ICE38 and ICE43 because they apply only to per-user installation. We only support per-machine installs
@@ -57,6 +56,15 @@ candle Setup.wxs -nologo -out Temp\Setup64.wixobj -ext WixUIExtension -ext WixUt
 light Temp\Setup64.wixobj -nologo -out Temp\Setup64.msi -ext WixUIExtension -ext WixUtilExtension -loc ..\Localization\%CS_LANG_FOLDER%\OpenShellText-%CS_LANG_NAME%.wxl -loc ..\Localization\%CS_LANG_FOLDER%\WixUI_%CS_LANG_NAME%.wxl -sice:ICE38 -sice:ICE43 -sice:ICE09
@if ERRORLEVEL 1 exit /b 1

+REM ********* Build ARM64 MSI
+echo --- ARM64 MSI
+candle Setup.wxs -nologo -out Temp\SetupARM64.wixobj -ext WixUIExtension -ext WixUtilExtension -dx64=0 -dARM64=1 -dCS_LANG_FOLDER=%CS_LANG_FOLDER% -dCS_LANG_NAME=%CS_LANG_NAME%
+@if ERRORLEVEL 1 exit /b 1
+
+@REM We need to suppress ICE38 and ICE43 because they apply only to per-user installation. We only support per-machine installs
+@REM We need to suppress ICE09 because the helper DLLs need to go into the system directory (for safety reasons)
+light Temp\SetupARM64.wixobj -nologo -out Temp\SetupARM64.msi -ext WixUIExtension -ext WixUtilExtension -loc ..\Localization\%CS_LANG_FOLDER%\OpenShellText-%CS_LANG_NAME%.wxl -loc ..\Localization\%CS_LANG_FOLDER%\WixUI_%CS_LANG_NAME%.wxl -sice:ICE38 -sice:ICE43 -sice:ICE09
+@if ERRORLEVEL 1 exit /b 1

 REM ********* Build MSI Checksums
 echo --- MSI Checksums
--- a/Src/Setup/Setup.cpp
+++ b/Src/Setup/Setup.cpp
@@ -12,10 +12,13 @@
 #include "StringUtils.h"
 #include "FNVHash.h"

-// Setup.exe is a bootstrap application that contains installers for 32-bit and 64-bit.
+// Setup.exe is a bootstrap application that contains installers for x86, x64 and ARM64.
 // It unpacks the right installer into the temp directory and executes it.

 typedef BOOL (WINAPI *FIsWow64Process)( HANDLE hProcess, PBOOL Wow64Process );
+typedef BOOL (WINAPI *FIsWow64Process2)( HANDLE hProcess, USHORT *pProcessMachine, USHORT *pNativeMachine );
+typedef BOOL (WINAPI *FWow64DisableWow64FsRedirection)( PVOID* OldValue );
+typedef BOOL (WINAPI *FWow64RevertWow64FsRedirection)( PVOID OldValue );



@@ -31,6 +34,14 @@ enum
 	ERR_MSIEXEC, // msiexec failed to start
 };

+enum ExtractType
+{
+	None,
+	x86,
+	x64,
+	ARM64
+};
+
 struct Chunk
 {
 	int start1, start2, len;
@@ -49,7 +60,7 @@ static void WriteFileXOR( HANDLE hFile, const unsigned char *buf, int size )
 	}
 }

-static int ExtractMsi( HINSTANCE hInstance, const wchar_t *msiName, bool b64, bool bQuiet )
+static int ExtractMsi( HINSTANCE hInstance, const wchar_t *msiName, ExtractType extractType, bool bQuiet )
 {
 	void *pRes=NULL;
 	HRSRC hResInfo=FindResource(hInstance,MAKEINTRESOURCE(IDR_MSI_CHECKSUM),L"MSI_FILE");
@@ -70,13 +81,21 @@ static int ExtractMsi( HINSTANCE hInstance, const wchar_t *msiName, bool b64, bo
 		}
 		return ERR_HASH_NOTFOUND;
 	}
-	unsigned int hash0=((unsigned int*)pRes)[b64?1:0];
+	unsigned int hash0=((unsigned int*)pRes)[extractType-1];
 	const Chunk *pChunks=NULL;
 	int chunkCount=0;
-	if (b64)
+	if (extractType==x64)
 	{
-		chunkCount=((unsigned int*)pRes)[2];
-		pChunks=(Chunk*)((unsigned int*)pRes+3);
+		chunkCount=((unsigned int*)pRes)[3];
+		pChunks=(Chunk*)((unsigned int*)pRes+4);
+	}
+	if (extractType==ARM64)
+	{
+		int x64chunkCount=((unsigned int*)pRes)[3];
+		const Chunk *px64Chunks=(Chunk*)((unsigned int*)pRes+4);
+
+		chunkCount=((unsigned int*)(px64Chunks+x64chunkCount))[0];
+		pChunks = (Chunk*)((unsigned int*)(px64Chunks+x64chunkCount)+1);
 	}

 	// extract the installer
@@ -99,11 +118,11 @@ static int ExtractMsi( HINSTANCE hInstance, const wchar_t *msiName, bool b64, bo
 		}
 		return ERR_MSIRES_NOTFOUND;
 	}
-	const unsigned char *pRes64=NULL;
+	const unsigned char *pRes64=NULL, *pResArm64=NULL;
 	int size32=SizeofResource(hInstance,hResInfo);
 	unsigned int hash;
-	int size64=0;
-	if (b64)
+	int size64=0, sizeArm64=0;
+	if (extractType==x64)
 	{
 		HRSRC hResInfo=FindResource(hInstance,MAKEINTRESOURCE(IDR_MSI_FILE64),L"MSI_FILE");
 		if (hResInfo)
@@ -140,6 +159,43 @@ static int ExtractMsi( HINSTANCE hInstance, const wchar_t *msiName, bool b64, bo
 		if (pos<size64)
 			hash=CalcFNVHash(pRes64+pos,size64-pos,hash);
 	}
+	else if (extractType==ARM64)
+	{
+		HRSRC hResInfo=FindResource(hInstance,MAKEINTRESOURCE(IDR_MSI_FILEARM64),L"MSI_FILE");
+		if (hResInfo)
+		{
+			HGLOBAL hRes=LoadResource(hInstance,hResInfo);
+			pResArm64=(unsigned char*)LockResource(hRes);
+		}
+		if (!pResArm64)
+		{
+			if (!bQuiet)
+			{
+				wchar_t strTitle[256];
+				if (!LoadString(hInstance,IDS_APP_TITLE,strTitle,_countof(strTitle))) strTitle[0]=0;
+				wchar_t strText[256];
+				if (!LoadString(hInstance,IDS_ERR_INTERNAL,strText,_countof(strText))) strText[0]=0;
+				MessageBox(NULL,strText,strTitle,MB_OK|MB_ICONERROR);
+			}
+			return ERR_MSIRES_NOTFOUND;
+		}
+
+		sizeArm64=SizeofResource(hInstance,hResInfo);
+		hash=FNV_HASH0;
+		int start=0;
+		int pos=0;
+		for (int i=0;i<chunkCount;i++)
+		{
+			const Chunk& chunk = pChunks[i];
+			if (start<chunk.start2)
+				hash=CalcFNVHash(pResArm64+pos,chunk.start2-start,hash);
+			hash=CalcFNVHash(pRes32+chunk.start1,chunk.len,hash);
+			pos+=chunk.start2-start;
+			start=chunk.start2+chunk.len;
+		}
+		if (pos<sizeArm64)
+			hash=CalcFNVHash(pResArm64+pos,sizeArm64-pos,hash);
+	}
 	else
 		hash=CalcFNVHash(pRes32,size32);
 	if (hash!=hash0)
@@ -173,7 +229,7 @@ static int ExtractMsi( HINSTANCE hInstance, const wchar_t *msiName, bool b64, bo
 		}
 		return ERR_MSI_EXTRACTFAIL;
 	}
-	if (b64)
+	if (extractType==x64)
 	{
 		int start=0;
 		int pos=0;
@@ -189,6 +245,22 @@ static int ExtractMsi( HINSTANCE hInstance, const wchar_t *msiName, bool b64, bo
 		if (pos<size64)
 			WriteFileXOR(hFile,pRes64+pos,size64-pos);
 	}
+	else if (extractType==ARM64)
+	{
+		int start=0;
+		int pos=0;
+		for (int i=0;i<chunkCount;i++)
+		{
+			const Chunk &chunk=pChunks[i];
+			if (start<chunk.start2)
+				WriteFileXOR(hFile,pResArm64+pos,chunk.start2-start);
+			WriteFileXOR(hFile,pRes32+chunk.start1,chunk.len);
+			pos+=chunk.start2-start;
+			start=chunk.start2+chunk.len;
+		}
+		if (pos<sizeArm64)
+			WriteFileXOR(hFile,pResArm64+pos,sizeArm64-pos);
+	}
 	else
 	{
 		WriteFileXOR(hFile,pRes32,size32);
@@ -218,7 +290,7 @@ int APIENTRY wWinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCm
 	wchar_t *const *params=CommandLineToArgvW(lpCmdLine,&count);
 	if (!params) count=0;

-	int extract=0;
+	ExtractType extractType=None;
 	bool bQuiet=false;
 	for (;count>0;count--,params++)
 	{
@@ -233,9 +305,11 @@ int APIENTRY wWinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCm
 			return 0;
 		}
 		if (_wcsicmp(params[0],L"extract32")==0)
-			extract=32;
+			extractType=x86;
 		if (_wcsicmp(params[0],L"extract64")==0)
-			extract=64;
+			extractType=x64;
+		if (_wcsicmp(params[0],L"extractARM64")==0)
+			extractType=ARM64;
 		if (_wcsicmp(params[0],L"/qn")==0 || _wcsicmp(params[0],L"/q")==0 || _wcsicmp(params[0],L"/quiet")==0 || _wcsicmp(params[0],L"/passive")==0)
 		{
 			bQuiet=true;
@@ -255,11 +329,11 @@ int APIENTRY wWinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCm
 		return ERR_VERRES_NOTFOUND;
 	}

-	if (extract)
+	if (extractType != None)
 	{
 		wchar_t msiName[_MAX_PATH];
-		Sprintf(msiName,_countof(msiName),L"OpenShellSetup%d_%d_%d_%d.msi",extract,HIWORD(pVer->dwProductVersionMS),LOWORD(pVer->dwProductVersionMS),HIWORD(pVer->dwProductVersionLS));
-		return ExtractMsi(hInstance,msiName,extract==64,bQuiet);
+		Sprintf(msiName,_countof(msiName),L"OpenShellSetup%s_%d_%d_%d.msi",(extractType==x86?L"32":(extractType==x64?L"64":L"ARM64")),HIWORD(pVer->dwProductVersionMS),LOWORD(pVer->dwProductVersionMS),HIWORD(pVer->dwProductVersionLS));
+		return ExtractMsi(hInstance,msiName,extractType,bQuiet);
 	}

 	// check Windows version
@@ -282,7 +356,9 @@ int APIENTRY wWinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCm
 	// dynamically link to IsWow64Process because it is not available for Windows 2000
 	HMODULE hKernel32=GetModuleHandle(L"kernel32.dll");
 	FIsWow64Process isWow64Process=(FIsWow64Process)GetProcAddress(hKernel32,"IsWow64Process");
-	if (!isWow64Process)
+	FWow64DisableWow64FsRedirection wow64DisableWow64FsRedirection=(FWow64DisableWow64FsRedirection)GetProcAddress(hKernel32,"Wow64DisableWow64FsRedirection");
+	FWow64RevertWow64FsRedirection wow64RevertWow64FsRedirection=(FWow64RevertWow64FsRedirection)GetProcAddress(hKernel32,"Wow64RevertWow64FsRedirection");
+	if (!isWow64Process || !wow64DisableWow64FsRedirection || !wow64RevertWow64FsRedirection)
 	{
 		if (!bQuiet)
 		{
@@ -295,13 +371,25 @@ int APIENTRY wWinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCm
 		return ERR_WRONG_OS;
 	}

-	BOOL b64=FALSE;
-	isWow64Process(GetCurrentProcess(),&b64);
+	// Use IsWow64Process2 if it's available (Windows 10 1511+), otherwise fall back to IsWow64Process
+	FIsWow64Process2 isWow64Process2=(FIsWow64Process2)GetProcAddress(hKernel32,"IsWow64Process2");
+	if (isWow64Process2)
+	{
+		USHORT processMachine = 0, nativeMachine = 0;
+		isWow64Process2(GetCurrentProcess(), &processMachine, &nativeMachine);
+		extractType=nativeMachine==IMAGE_FILE_MACHINE_AMD64?x64:nativeMachine==IMAGE_FILE_MACHINE_ARM64?ARM64:x86;
+	}
+	else
+	{
+		BOOL x64=FALSE;
+		isWow64Process(GetCurrentProcess(),&x64);
+		extractType=x64?ExtractType::x64:x86;
+	}

 	wchar_t msiName[_MAX_PATH];
-	Sprintf(msiName,_countof(msiName),L"%%ALLUSERSPROFILE%%\\OpenShellSetup%d_%d_%d_%d.msi",b64?64:32,HIWORD(pVer->dwProductVersionMS),LOWORD(pVer->dwProductVersionMS),HIWORD(pVer->dwProductVersionLS));
+	Sprintf(msiName,_countof(msiName),L"%%ALLUSERSPROFILE%%\\OpenShellSetup%s_%d_%d_%d.msi",(extractType==x86?L"32":(extractType==x64?L"64":L"ARM64")),HIWORD(pVer->dwProductVersionMS),LOWORD(pVer->dwProductVersionMS),HIWORD(pVer->dwProductVersionLS));
 	DoEnvironmentSubst(msiName,_countof(msiName));
-	int ex=ExtractMsi(hInstance,msiName,b64!=FALSE,bQuiet);
+	int ex=ExtractMsi(hInstance,msiName,extractType,bQuiet);
 	if (ex) return ex;

 	wchar_t cmdLine[2048];
@@ -316,11 +404,19 @@ int APIENTRY wWinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCm
 		Sprintf(cmdLine,_countof(cmdLine),L"msiexec.exe /i \"%s\" %s",msiName,lpCmdLine);
 	}

+	// On ARM64 we must launch msiexec.exe from system32 and not syswow64 as would otherwise happen
+	PVOID wow64FsRedirVal=NULL;
+	if (extractType == ARM64)
+		Wow64DisableWow64FsRedirection(&wow64FsRedirVal);
+
 	// start the installer
 	STARTUPINFO startupInfo={sizeof(startupInfo)};
 	PROCESS_INFORMATION processInfo;
 	memset(&processInfo,0,sizeof(processInfo));
-	if (!CreateProcess(NULL,cmdLine,NULL,NULL,TRUE,0,NULL,NULL,&startupInfo,&processInfo))
+	BOOL ret=CreateProcess(NULL,cmdLine,NULL,NULL,TRUE,0,NULL,NULL,&startupInfo,&processInfo);
+	if (extractType == ARM64)
+		Wow64RevertWow64FsRedirection(wow64FsRedirVal);
+	if (!ret)
 	{
 		DeleteFile(msiName);
 		if (!bQuiet)
--- a/Src/Setup/Setup.rc
+++ b/Src/Setup/Setup.rc
@@ -102,6 +102,7 @@ END

 IDR_MSI_FILE32          MSI_FILE                "Temp\\Setup32.msi_"
 IDR_MSI_FILE64          MSI_FILE                "Temp\\Setup64.msi_"
+IDR_MSI_FILEARM64       MSI_FILE                "Temp\\SetupARM64.msi_"
 IDR_MSI_CHECKSUM        MSI_FILE                "msichecksum.bin"


@@ -126,7 +127,7 @@ END

 STRINGTABLE 
 BEGIN
-    IDS_HELP                "Open-Shell Setup will install Open-Shell on  your computer. Possible command lines:\n    <no command line> - runs the installer normally\n    extract32 - extracts the 32-bit MSI\n    extract64 - extracts the 64-bit MSI\n    help, /? - shows the command line help\n    <some msiexec options> - the options are passed to msiexec\n        * if the options contain %MSI% (all caps) the token is replaced by the name of the extracted MSI file\n        * if %MSI% is not found, the setup runs ""msiexec /i <MSI file> <some msiexec options>""\n        * run msiexec with no parameters to see the full list of msiexec options\n\nExamples:\n    /qn - runs the installer in quiet mode\n    /x %MSI% /qb - uninstalls the product in basic UI level\n    /f %MSI% - repairs the product\n    /l* log.txt - runs the installer and logs the process in the log.txt file\n    /qn ADDLOCAL=ClassicExplorer - installs only Classic Explorer in quiet mode\n    /qn ADDLOCAL=StartMenu APPLICATIONFOLDER=C:\\OpenShell - installs only Open-Shell Start Menu in quiet mode in the folder C:\\OpenShell\n    ADDLOCAL=StartMenu,ClassicIE - runs the installer in full UI mode with Open-Shell Start Menu and Classic IE checked by default"
+    IDS_HELP                "Open-Shell Setup will install Open-Shell on  your computer. Possible command lines:\n    <no command line> - runs the installer normally\n    extract32 - extracts the 32-bit MSI\n    extract64 - extracts the 64-bit MSI\n    extractARM64 - extracts the ARM64 MSI\n    help, /? - shows the command line help\n    <some msiexec options> - the options are passed to msiexec\n        * if the options contain %MSI% (all caps) the token is replaced by the name of the extracted MSI file\n        * if %MSI% is not found, the setup runs ""msiexec /i <MSI file> <some msiexec options>""\n        * run msiexec with no parameters to see the full list of msiexec options\n\nExamples:\n    /qn - runs the installer in quiet mode\n    /x %MSI% /qb - uninstalls the product in basic UI level\n    /f %MSI% - repairs the product\n    /l* log.txt - runs the installer and logs the process in the log.txt file\n    /qn ADDLOCAL=ClassicExplorer - installs only Classic Explorer in quiet mode\n    /qn ADDLOCAL=StartMenu APPLICATIONFOLDER=C:\\OpenShell - installs only Open-Shell Start Menu in quiet mode in the folder C:\\OpenShell\n    ADDLOCAL=StartMenu,ClassicIE - runs the installer in full UI mode with Open-Shell Start Menu and Classic IE checked by default"
 END

 #endif    // English (U.S.) resources
--- a/Src/Setup/Setup.vcxproj
+++ b/Src/Setup/Setup.vcxproj
@@ -64,6 +64,7 @@
    <None Include="msichecksum.bin" />
    <None Include="Temp\Setup32.msi_" />
    <None Include="Temp\Setup64.msi_" />
+    <None Include="Temp\SetupARM64.msi_" />
    <None Include="__MakeFinal.bat" />
  </ItemGroup>
  <ItemGroup>
--- a/Src/Setup/Setup.vcxproj.filters
+++ b/Src/Setup/Setup.vcxproj.filters
@@ -61,5 +61,6 @@
    <None Include="Temp\Setup32.msi_" />
    <None Include="Temp\Setup64.msi_" />
    <None Include="msichecksum.bin" />
+    <None Include="Temp\SetupARM64.msi_" />
  </ItemGroup>
 </Project>
--- a/Src/Setup/Setup.wxs
+++ b/Src/Setup/Setup.wxs
@@ -3,7 +3,7 @@
    # This comment is generated by WixEdit, the specific commandline
    # arguments for the WiX Toolset are stored here.

-    candleArgs: "<projectfile>" -out "<projectname>.wixobj" -ext WixUIExtension -ext WixUtilExtension -dx64=0
+    candleArgs: "<projectfile>" -out "<projectname>.wixobj" -ext WixUIExtension -ext WixUtilExtension -dx64=0 -dARM64=0
    lightArgs: "<projectname>.wixobj" -out "<projectname>.msi" -ext WixUIExtension -ext WixUtilExtension -loc OpenShellText-en-US.wxl
 -->
 <?if $(var.x64)=1 ?>
@@ -11,6 +11,11 @@
 <?define CS_PLATFORM  = "x64"?>
 <?define CS_PROGRAM_FILES  = "ProgramFiles64Folder"?>
 <?define CS_WIN64  = "yes"?>
+<?elseif $(var.ARM64)=1 ?>
+<?define CS_UPGRADE = "BECF7DE9-53D0-41E7-92DC-0EF4ACCCD867"?>
+<?define CS_PLATFORM  = "arm64"?>
+<?define CS_PROGRAM_FILES  = "ProgramFiles64Folder"?>
+<?define CS_WIN64  = "yes"?>
 <?else ?>
 <?define CS_UPGRADE = "EB7DA1D9-44EA-43BF-8A08-0B103007D4F2"?>
 <?define CS_PLATFORM  = "x86"?>
@@ -22,9 +27,13 @@
 		<Package Description="Open-Shell" Comments="Start Menu Replacement" InstallerVersion="500" Compressed="yes" Platform="$(var.CS_PLATFORM)" />
 		<Media Id="1" Cabinet="cshell.cab" EmbedCab="yes" CompressionLevel="high" />
 		<Media Id="2" Cabinet="simple.cab" EmbedCab="yes" CompressionLevel="high" />
-		<?if $(var.x64)=0 ?>
+		<PropertyRef Id="WIX_NATIVE_MACHINE" />
+		<?if $(var.x64)=0 And $(var.ARM64)=0 ?>
 		<Condition Message="!(loc.Error32bit)">not Msix64</Condition>
 		<?endif ?>
+		<?if $(var.x64)=1 ?>
+		<Condition Message="!(loc.Error64bit)">NOT (WIX_NATIVE_MACHINE AND WIX_NATIVE_MACHINE="43620")</Condition>
+		<?endif ?>
 		<Condition Message="!(loc.ErrorWin7)">VersionNT&gt;=601</Condition>
 		<Condition Message="!(loc.ErrorNewVersion)">NOT NEWERPRODUCTFOUND OR Installed</Condition>
 		<Directory Id="TARGETDIR" Name="SourceDir">
@@ -59,7 +68,7 @@
 			<?endif ?>
 			<Feature Id="ClassicExplorer" Level="1" Title="!(loc.ExplorerTitle)" ConfigurableDirectory="APPLICATIONFOLDER" AllowAdvertise="no" Description="!(loc.ExplorerDesc)">
 				<ComponentRef Id="ClassicExplorer32.dll" />
-				<?if $(var.x64)=1 ?>
+				<?if $(var.x64)=1 Or $(var.ARM64)=1 ?>
 				<ComponentRef Id="ClassicExplorer64.dll" />
 				<?endif ?>
 				<ComponentRef Id="ExplorerL10N.ini" />
@@ -71,7 +80,7 @@
 				<ComponentRef Id="StartMenuDLL.dll" />
 				<ComponentRef Id="StartMenuL10N.ini" />
 				<ComponentRef Id="StartMenuHelper32.dll" />
-				<?if $(var.x64)=1 ?>
+				<?if $(var.x64)=1 Or $(var.ARM64)=1 ?>
 				<ComponentRef Id="StartMenuHelper64.dll" />
 				<?endif ?>
 				<ComponentRef Id="StartScreenLink" />
@@ -98,7 +107,7 @@
 			<Feature Id="ClassicIE" Level="2" Title="!(loc.IETitle)" ConfigurableDirectory="APPLICATIONFOLDER" AllowAdvertise="no" Description="!(loc.IEDesc)">
 				<ComponentRef Id="ClassicIEDLL_32.dll" />
 				<ComponentRef Id="ClassicIE_32.exe" />
-				<?if $(var.x64)=1 ?>
+				<?if $(var.x64)=1 Or $(var.ARM64)=1 ?>
 				<ComponentRef Id="ClassicIEDLL_64.dll" />
 				<ComponentRef Id="ClassicIE_64.exe" />
 				<?endif ?>
@@ -443,6 +452,25 @@
 			<Component Id="StartMenuDLL.dll" Guid="C5226061-17DE-4DF6-A088-CC84F6A7BE84" Win64="yes" DiskId="2">
 				<File Id="StartMenuDLL.dll" Checksum="yes" KeyPath="yes" Source="Output\x64\StartMenuDLL.dll" Vital="yes" />
 			</Component>
+			<?elseif $(var.ARM64)=1 ?>
+			<Component Id="ClassicExplorer64.dll" Guid="2C25783D-394D-4E5B-9259-1650F561E2CE" Win64="yes" DiskId="2">
+				<File Id="ClassicExplorer64.dll" KeyPath="yes" Source="Output\ARM64\ClassicExplorer64.dll" Checksum="yes" SelfRegCost="0" Vital="yes" />
+			</Component>
+			<Component Id="ClassicIEDLL_64.dll" Guid="43E62408-40EB-4FBB-98CC-7463F5B78266" Win64="yes" DiskId="2">
+				<File Id="ClassicIEDLL_64.dll" KeyPath="yes" Source="Output\ARM64\ClassicIEDLL_64.dll" Checksum="yes" SelfRegCost="0" Vital="yes" />
+			</Component>
+			<Component Id="ClassicIE_64.exe" Guid="E822E720-8477-4511-AD93-172313EFA636" Win64="yes" DiskId="2">
+				<File Id="ClassicIE_64.exe" KeyPath="yes" Source="Output\ARM64\ClassicIE_64.exe" Checksum="yes" Vital="yes" />
+			</Component>
+			<Component Id="StartMenu.exe" Guid="FC69E080-4232-4161-A1E5-20E255FB2F6B" Win64="yes" DiskId="2">
+				<File Id="StartMenu.exe" KeyPath="yes" Checksum="yes" Source="Output\ARM64\StartMenu.exe" Vital="yes" />
+				<Shortcut Id="StartMenuSettings" Name="Start Menu Settings" Advertise="no" Arguments="-settings" Description="!(loc.StartSettingsDesc)" Target="[APPLICATIONFOLDER]StartMenu.exe" WorkingDirectory="APPLICATIONFOLDER">
+					<ShortcutProperty Key="System.AppUserModel.ID" Value="OpenShell.StartMenu.Settings" />
+				</Shortcut>
+			</Component>
+			<Component Id="StartMenuDLL.dll" Guid="ED99E7BC-9F2C-4A96-A942-6E7D41628AB0" Win64="yes" DiskId="2">
+				<File Id="StartMenuDLL.dll" Checksum="yes" KeyPath="yes" Source="Output\ARM64\StartMenuDLL.dll" Vital="yes" />
+			</Component>
 			<?else ?>
 			<Component Id="StartMenu.exe" Guid="F74C0FF3-A8C0-4B6E-AFD2-F9467DE4D90B" Win64="no" DiskId="2">
 				<File Id="StartMenu.exe" KeyPath="yes" Checksum="yes" Source="Output\StartMenu.exe" Vital="yes" />
@@ -624,6 +652,11 @@
 				<File Id="StartMenuHelper64.dll" KeyPath="yes" Source="Output\x64\StartMenuHelper64.dll" Checksum="yes" SelfRegCost="0" Vital="yes" />
 			</Component>
 			<?endif ?>
+			<?if $(var.ARM64)=1 ?>
+			<Component Id="StartMenuHelper64.dll" Guid="108B11E8-2F76-4C37-A274-62BAE6240490" Win64="yes" DiskId="2">
+				<File Id="StartMenuHelper64.dll" KeyPath="yes" Source="Output\ARM64\StartMenuHelper64.dll" Checksum="yes" SelfRegCost="0" Vital="yes" />
+			</Component>
+			<?endif ?>
 		</DirectoryRef>
 		<Icon Id="icon.ico" SourceFile="..\Setup\OpenShell.ico" />
 		<Property Id="ARPPRODUCTICON" Value="icon.ico" />
--- a/Src/Setup/Utility/Utility.cpp
+++ b/Src/Setup/Utility/Utility.cpp
@@ -86,7 +86,7 @@ int CalcMsiChecksum( wchar_t *const *params, int count )

 	// load files
 	wchar_t path1[_MAX_PATH];
-	std::vector<unsigned char> buf1, buf2;
+	std::vector<unsigned char> buf1, buf2, buf3;
 	Sprintf(path1,_countof(path1),L"%s\\Setup32.msi",params[1]);
 	LoadFile(path1,buf1);
 	if (buf1.empty())
@@ -102,20 +102,30 @@ int CalcMsiChecksum( wchar_t *const *params, int count )
 		Printf("Failed to open file %s\n",path2);
 		return 1;
 	}
+	wchar_t path3[_MAX_PATH];
+	Sprintf(path3,_countof(path3),L"%s\\SetupARM64.msi",params[1]);
+	LoadFile(path3,buf3);
+	if (buf3.empty())
+	{
+		Printf("Failed to open file %s\n",path3);
+		return 1;
+	}

 	int len1=(int)buf1.size();
 	int len2=(int)buf2.size();
+	int len3=(int)buf3.size();

 	for (std::vector<unsigned char>::iterator it=buf1.begin();it!=buf1.end();++it)
 		*it^=0xFF;
 	for (std::vector<unsigned char>::iterator it=buf2.begin();it!=buf2.end();++it)
 		*it^=0xFF;
+	for (std::vector<unsigned char>::iterator it=buf3.begin();it!=buf3.end();++it)
+		*it^=0xFF;

-	// detect common blocks (assuming at least 256K in size and in the same order in both files)
-	const int BLOCK_SIZE=256*1024;
+	const int BLOCK_SIZE = 256 * 1024;
+	// detect x86/x64 common blocks (assuming at least 256K in size and in the same order in both files)
 	std::vector<Chunk> chunks;
-	int start2=0;
-	for (int i=0;i<len1-BLOCK_SIZE;i+=BLOCK_SIZE)
+	for (int i=0,start2=0;i<len1-BLOCK_SIZE;i+=BLOCK_SIZE)
 	{
 		for (int j=start2;j<len2-BLOCK_SIZE;j++)
 		{
@@ -142,6 +152,35 @@ int CalcMsiChecksum( wchar_t *const *params, int count )
 			}
 		}
 	}
+	// detect x86/ARM64 common blocks (assuming at least 256K in size and in the same order in both files)
+	std::vector<Chunk> chunks2;
+	for (int i=0,start2=0;i<len1-BLOCK_SIZE;i+=BLOCK_SIZE)
+	{
+		for (int j=start2;j<len3-BLOCK_SIZE;j++)
+		{
+			if (memcmp(&buf1[i],&buf3[j],BLOCK_SIZE)==0)
+			{
+				Chunk chunk;
+				chunk.start1=i;
+				chunk.start2=j;
+				chunk.len=BLOCK_SIZE;
+				while (chunk.start1>0 && chunk.start2>0 && buf1[chunk.start1-1]==buf3[chunk.start2-1])
+				{
+					chunk.start1--;
+					chunk.start2--;
+					chunk.len++;
+				}
+				while (chunk.start1+chunk.len<len1 && chunk.start2+chunk.len<len3 && buf1[chunk.start1+chunk.len]==buf3[chunk.start2+chunk.len])
+				{
+					chunk.len++;
+				}
+				chunks2.push_back(chunk);
+				i=chunk.start1+chunk.len-1;
+				start2=chunk.start2+chunk.len;
+				break;
+			}
+		}
+	}

 	// save modified 32-bit MSI
 	{
@@ -177,9 +216,31 @@ int CalcMsiChecksum( wchar_t *const *params, int count )
 		fclose(f);
 	}

-	unsigned int fnvs[2];
+	// save modified ARM64 MSI
+	{
+		Strcat(path3,_countof(path3),L"_");
+		FILE* f=NULL;
+		if (_wfopen_s(&f,path3,L"wb") || !f)
+		{
+			Printf("Failed to write %s\n",path3);
+			return 1;
+		}
+		int start=0;
+		for (std::vector<Chunk>::const_iterator it=chunks2.begin();it!=chunks2.end();++it)
+		{
+			if (it->start2-start>0)
+				fwrite(&buf3[start],1,it->start2-start,f);
+			start=it->start2+it->len;
+		}
+		if (len3-start>0)
+			fwrite(&buf3[start],1,len3-start,f);
+		fclose(f);
+	}
+
+	unsigned int fnvs[3];
 	fnvs[0]=CalcFNVHash(&buf1[0],len1,FNV_HASH0);
 	fnvs[1]=CalcFNVHash(&buf2[0],len2,FNV_HASH0);
+	fnvs[2]=CalcFNVHash(&buf3[0],len3,FNV_HASH0);

 	// save fnvs and chunks
 	{
@@ -193,6 +254,9 @@ int CalcMsiChecksum( wchar_t *const *params, int count )
 		int count=(int)chunks.size();
 		fwrite(&count,1,4,f);
 		fwrite(&chunks[0],sizeof(Chunk),count,f);
+		count=(int)chunks2.size();
+		fwrite(&count,1,4,f);
+		fwrite(&chunks2[0],sizeof(Chunk),count,f);
 		fclose(f);
 	}
 	return 0;
@@ -841,7 +905,7 @@ static HRESULT CALLBACK TaskDialogCallback( HWND hwnd, UINT uNotification, WPARA
 // Open-Shell utility - multiple utilities for building and maintaining Open-Shell
 // Usage:
 //   no parameters - saves a troubleshooting log
-//   crcmsi <msi path> // creates a file with checksum of both msi files
+//   crcmsi <msi path> // creates a file with checksum of all msi files
 //   makeEN <explorer dll> <start menu dll> <ie dll> <update exe> // extracts the localization resources and creates a sample en-US.DLL
 //   extract <dll> <csv> // extracts the string table, the dialog text, and the L10N text from a DLL and stores it in a CSV
 //   extract en-us.dll <dll> <csv> // extracts the string table, the dialog text, and the L10N text from two DLL and stores it in a CSV
--- a/Src/Setup/Utility/Utility.vcxproj
+++ b/Src/Setup/Utility/Utility.vcxproj
@@ -1,6 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|ARM64">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
    <ProjectConfiguration Include="Debug|Win32">
      <Configuration>Debug</Configuration>
      <Platform>Win32</Platform>
@@ -9,6 +13,10 @@
      <Configuration>Debug</Configuration>
      <Platform>x64</Platform>
    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM64">
+      <Configuration>Release</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
    <ProjectConfiguration Include="Release|Win32">
      <Configuration>Release</Configuration>
      <Platform>Win32</Platform>
@@ -63,6 +71,7 @@
  <ItemGroup>
    <ResourceCompile Include="Utility.rc">
      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">true</ExcludedFromBuild>
    </ResourceCompile>
  </ItemGroup>
  <ItemGroup>
--- a/Src/Setup/resource.h
+++ b/Src/Setup/resource.h
@@ -8,6 +8,7 @@
 #define IDS_ERR_CORRUPTED               102
 #define IDR_MSI_FILE32                  132
 #define IDR_MSI_FILE64                  164
+#define IDR_MSI_FILEARM64               165
 #define IDS_ERR_INTERNAL                166
 #define IDS_ERR_EXTRACT                 167
 #define IDR_MSI_CHECKSUM                167