Error in Exchange 2010 EMC after demoting a DC

The day after demoting my last Windows Server 2003 DC I started receiving two errors in my Exchange 2010 EMC when clicking on the Mailboxes node. The errors were:

• An error caused a change in the current set of domain controllers. It was running the command ‘Get-OrganizationConfig’.
• An error caused a change in the current set of domain controllers. It was running the command ‘Get-Recipient -PropertySet ConsoleLargeSet  -ResultSize ‘1000’ -SortBy DisplayName -RecipientType ‘UserMailbox”.

The fix is to close the EMC then browse to C:\Users\<USERNAME>\AppData\Roaming\Microsoft\MMC & delete the file called “Exchange Management Console”. Opened the EMC again & no error.

The two links below had the solution:

http://social.technet.microsoft.com/Forums/en-GB/exchange2010/thread/cb231da0-2b06-41ce-9f4a-f11d408cf07f

http://blog.chrislehr.com/2010/06/odd-domain-controller-errors-in.html