Build with .NET 4.0 in Team Foundation Server

In order to force your Team Build to use the .NET assemblies and tools you'll need to make the following change.

Change the value in the

C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\PrivateAssemblies\tfsbuildservice.exe.config

From

add key="MSBuildPath" value=""

to

add key="MSBuildPath" value="C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319"

TFS service must be restarted afterwards "Visual Studio Team Foundation Build"

http://blogs.infosupport.com/blogs/martijnb/archive/2010/05/04/building-visual-studio-2010-solutions-using-team-build-2008.aspx