How to build a c# solution with 64 bit MSBuild?

Question

I have a batch file that builds a C# solution. It is using MSBuild, specifically the version found at ProgramFiles(x86)\\MSBuild\\14.0\\Bin\\msbuild. I want to update this to use a 64 bit version of MSBuild. I have tried changing the directory to ProgramFiles(x86)\\MSBuild\\14.0\\Bin\\amd64\\msbuild but I always get this error while GACing:

"Failed to install assembly into the global assembly cache. Result Code: -2146234299."

I'm not sure what this means. This error seems to only be happening when trying to gac the interops. Any ideas what is causing this?

Answer 1

I am not very sure if this will work, but you can try this.

1. Build > Configuration Solution > Active project > Platform- New > Select 64 bit as Platform.