FX:{18ea3f92-d6aa-41d9-a205-2023400c8fbb} The snap-in has been unloaded by user requestSystem.InvalidOperationException,every time i opening the exchange mangement console shows the error.

Thanks for sharing!Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi 213123, Are you running Exchange 2010? Please try to log on to Exchange server using another Exchange admin's account to see whether it works or not.Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.