DFSR Won't re-enable There are times when DFS was used prior and it just won't work anymore.  This has been seen in AD replication.       The DB that DFS refers to is in    C:\System Volume Information\DFSR     Within that folder is the DFS information.  If that information is bad you have to purge it.     Remove the server from all DFSR   Update settings to allow you to see hidden system files   Take ownership of "System Volume Information"   Grant full access to folder and subfolders to yourself   CMD Elevated: rmdir "C:\System Volume Information\DFSR" /s   At this point all the DFSR information is gone but you messed with vital security permissions    I am using: DISM.exe /Online /Cleanup-image /Restorehealth   To hopefully get it back in-line