getting everything anew from TFS

As a side effect, when VersionControl.config became corrupted, I found that Team Foundation Server thought that every one of my files was out of sync with the files on the server. What to do?

1. Close your project
2. Go to the Team Explorer tab and double-click Source Control
3. From the Workspace dropdown (in the Source Control Explorer pane), pick Workspaces
4. With the dialog box for workspaces open, click the Edit button
5. Delete the association to trunk
6. Outside of Visual Studio, delete everything out of the trunk
7. In the Source Control Explorer pane, reassociate the trunk folder with the project's trunk by right-clicking on the project's trunk