Thanks Botz3000, now it also works for me!

, Botz3000 wrote

This is how it worked for me on VS2010 Pro: 

Install FxCop
Install FxCop Integrator (http://fxcopintegrator.codeplex.com/releases/view/78053)
Copy all Files from "C:\Program Files\Microsoft Fxcop 10.0" to "C:\Program Files\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\FxCop"

Note: When you have a 64bit Windows then will the above Directories look like this: "C:\Program Files (x86)\Microsoft Fxcop 10.0" and "C:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\FxCop"