MSBuild 4.0 or Visual Studio 2010 may fail to compile a 32-bit application targeted for .NET Framework 3.5, 3.0 or 2.0 on a x64 machine
This article helps you resolve the problem where MSBuild 4.0 or Microsoft Visual Studio 2010 can't compile a 32-bit application that's targeted for .NET Framework 3.5, 3.0 or 2.0 on x64 machine.
Original product version: Visual Studio 2010
Original KB number: 2028833
You're building an application targeted for x86 configuration on a x64 machine with Visual Studio 2010. The project contains a resource file referencing a 32-bit assembly. Target Framework selected is 3.5, 3.0 or 2.0.
You may get the following error:
Form1.resx(161,5):error RG0000: Could not load file or assembly "<file_name>" or one of its dependencies. An attempt was made to load a program with an incorrect format. Line 161, position 5.
The diagnostic build-log shows that task GenerateResource fails.
<system_drive>:\Program Files (x86)\Microsoft SDKs\Windows\vx.x\bin, which is a part of Windows SDK, is marked as MSIL, so it will run as a 64-bit process. It will try to load a 32-bit assembly and fail.
In order to work around this issue, you need to perform the following steps:
Close all instances of Visual Studio.
From the Visual Studio Tools sub folder, open an elevated Visual Studio Command Prompt (2010) (using Run as administrator option). Change directory to
<system_drive>:\Program Files (x86)\Microsoft SDKs\Windows\v<x.xx>\bin\.
Issue the command:
corflags /32bit+ ResGen.exe /force
Open <project_name>.csproj in notepad.
Add the property
PropertyGroupsection. Save and close the csproj file.
If you want to build a .resx file that references a 64-bit assembly targeting v3.5, v3.0 or v2.0, you may have to reverse this workaround before doing so.
CorFlagsCorFlags.exe (CorFlags Conversion Tool) may help you.