Trying to delete a folder (with files in it) on my server today, for whatever reason I could not enter, delete, or take ownership of this folder. I tried the UI, as well as the takeown command, both returned an access denied trying to take ownership. Because I am a full administrator, my suspicion is that there is an open file. Because this is a file server with hundreds of open files and folders, I could not easily identify the connection to close. I rebooted the server, and without issuing any more commands my access to the files/folders had returned. GO MICROSOFT!..