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Exchange 2010 try’s to connect to a Demoted DC

Posted on 2010-09-20
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Last Modified: 2012-05-10
Morning.
About a week ago we demoted one of 2 DC in my Org.
My exchange server however has not yet heard about this, when I open the Exchange management console I always get the message "Error caused a change in Domain Controllers"
Has anyone any idea how to rid my of these boring messages.
The server is performing as it should otherwise.
My error message is as follows
--------------------------------------------------------
Microsoft Exchange Error
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Action 'Clear Move Request' could not be performed on object 'Björn Þórhallsson'.

Björn Þórhallsson
Failed
Error:
An Active Directory error 0x51 occurred when trying to check the suitability of server 'xxxxxxxxx.xxxxxxxx.xxxx'. Error: 'Active directory response: The LDAP server is unavailable.'

The LDAP server is unavailable.


Error:
An error caused a change in the current set of domain controllers.




--------------------------------------------------------
OK
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Question by:Pall Palsson
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3 Comments
 
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Accepted Solution

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murli30 earned 500 total points
ID: 33714875

Try few steps mentioned below


Step 1:-
Go to this location and Deleted Exchange Management Console file.
C:\users\<specific user>\AppData\Roaming\Microsoft\MMC\Exchange Management Console
Close & reopen EMC

Step 2:-
Logoff the administrators account & login with another account
Delete the administrators profile
Logoff & re-login as administrator

Try Step1 and see if that works
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Author Closing Comment

by:Pall Palsson
ID: 33714904
worked like a charm , Step 1:-  did the trick.
Do you have any further explanation on why the MMC fails to update the DC's ?
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Expert Comment

by:murli30
ID: 33717396

I feel cached information which is stored in MMC dosen't gets cleared out or updated when there are DC changes

I have seen that issue  mostly on Exchange 2010 server's, Exchange 2007 servers work fine
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