How do I get rid of "API restriction UnitTestFramework.dll already loaded" error?

Question

The following error pops up every now and then:

C:\Program Files\MSBuild\Microsoft\VisualStudio\v9.0\TeamTest\Microsoft.TeamTest.targets(14,5): error : API restriction: The assembly 'file:///C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\PublicAssemblies\Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll' has already loaded from a different location. It cannot be loaded from a new location within the same appdomain.

How do I get rid of it?

Answer 1

• Edit the .csproj file
• Remove the processorArchitecture=MSIL on the end of the UnitTestFramework reference.

Change:

<reference Include="Microsoft.VisualStudio.QualityTools.UnitTestFramework, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" />

to:

<reference Include="Microsoft.VisualStudio.QualityTools.UnitTestFramework, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />

• Restart Visual Studio