We had some issues with some users accessing the DFS shares.
Turns out that our main filesystem went down so DFS was routing everyone to our DR file server. However, the DR file server was in read only mode for users. We were able to track which DFS server the clients were connecting to by using
this assisted us in finding out the root cause of the strange errors. Even though the DFS MMC showed the DR site referral status as disabled the dfsutil showed us stuff was still connecting to it and using it actively.