To delete your local workspace
Source Control Explorer -> Workspace dropdown -> Workspaces -> Remove
Reporting on File Change history in TFS
Use the TFS command line utility, tf.exe with the preview option to get the latest, which results in a list of files changed since that changeset or date.
"C:\Program Files\Microsoft Visual Studio 12.0\Common7\IDE\tf.exe" get "$/Project/*.*" /version:T /recursive /preview
CodeGuru: Team Foundation Server Source Control Explained
Reporting on TF Status
Use the TFS command line utility, tf.exe to display information about pending changes to items in one or more workspaces.
"C:\Program Files\Microsoft Visual Studio 12.0\Common7\IDE\tf.exe" status /collection:http://[TFS Server]:8080/tfs/[Collection Name] /user:* /format:Detailed
Fix TFS: The download file is corrupt. Please get the file again.
Cleanup server cache (TFS 2012)
Go to your application tier machine and delete whatever is under:
C:\Program Files\Microsoft Team Foundation Server 11.0\Application Tier\Web Services\_tfs_data
if scared to delete - rename the folder. The folder with the same name will be created immidiately again by application tier anyway, then you can delete the old one.
If files are in use - stop tfs server, perform deletion, start tfs server
Cleanup client cache
C:\Users\[username]\AppData\Local\Microsoft\Team Foundation\#.0\Cache