A user who is Manager of a DG is getting an error that they do not have the privileges to add or remove users. She was able to do this just fine on this group for past few months until yesterday. I tired puling her off as the manager of the group and adding her back. This was a DG folded over from a Exchange 2003 server so I ran the cmd to upgrade the DG to 2010 successfully. I have added others users as a the manager of the DG and they can add/remove just fine. But this user cannot add/remove anyone no matter what I do please help lol.