I am working on a Visual Studio 2008 project that is already added to TFS server. I am not sure which settings and policies have been configured for the TFS (this is done by a s
Close your solution.
Unplug your network cable.
Open your solution.
Visual Studio will tell you that TFS is not available and will open the solution "Offline".
Plug your network cable back in. VS should not take the solution "Online" until you explicitly ask it to.
You can then make any changes you like. When you attempt to save files it will tell you they are readonly - just overwrite them.
If you decide you want to check them in, take the solution Online by right-clicking it in the Solution Explorer.
Otherwise, just delete the local copy of the source when you're through with it.