If you are trying to delete a file or folder and it won’t let you by saying that it is being used by another process and you are sure that no other visible program has it opened, chances are it is being monitored by TSVNCache.exe, the background process that watches your file system for SVN related files and folders. Killing that process will allow you to delete the file or folder you need. Note that if you want to delete a file that is being versioned you should do it through the SVN delete command and not through Windows as you risk corrupting your working copy. This particular case applies to instances where you want to delete a folder that is no longer being version controlled. If it does not immediately work, then restarting your computer after deleting the SVN folders should do it.