How to remove a TFS Workspace Mapping?

I just encountered this issue after changing the build servers domain names. Clearing the TFS mappings using TFS side kicks did not worked.


Error:

C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\TeamBuild\Microsoft.TeamFoundation.Build.targets (806): The path c:\builds\bizproj\QA\Sources\Configuration2.0 is already mapped in workspace LOCALBUILD02_72_2;\tfsuser.

Go to the build machines and delete the files under this folder.

C:\Users{UserName}\AppData\Local\Microsoft\Team Foundation\3.0\Cache

After you clear that trigger a new build and see the results.