Error opening Exchange Management Console
I recently had an issue at a client after we replaced their old domain controllers that were running Windows Server 2003 with a pair of brand new 2012 R2 servers. I upgraded the domain and forest functional level to 2012 R2 and decommissioned the old servers. However later in the day I noticed issues getting into the Exchange Management Console on their Exchange 2010 server. I would receive the following error message
“An error caused a change in the current set of Active Directory server settings. Restart the Exchange Management Console.”
After performing some investigation I found out the fix was very easy. Simply delete the file below
C:\Users\%username%\AppData\Roaming\Microsoft\MMC\Exchange Management Console
You should now be able to open the EMC without an error.