Pro-Exchange,Lync & Office 365
Belgian Microsoft Unified Communications Professionals
Microsoft Exchange Server, Microsoft Lync Server & Office 365
My 2 recent Exchange Management Console issues


just wanted to share with you my recent experiences with the Exchange Management Console.

  1. The EMC throwing errors all over the place, when investigating the error it seems the EMC kept trying to communicate with a domain controller that was no longer available. The event log may throw an error like "Active Directory error 0x51 ....The LDAP server is unavailable...".

    PSS has created the following KB Article that goes into more detail:;en-us;2019500

    Basically go ahead and delete (or edit) the EMC configuration file located in “C:\users\<specific user>\AppData\Roaming\Microsoft\MMC\Exchange Management Console”

  2. We have all experienced that the EMC Console starts up slowly and even more in Exchange 2010 with dependencies related to RBAC. In my recent case it took at least 35s for the Console to be available. So I did some network tracing to see what was going on and noticed a lot of network attempts going towards "". Looks familiar doesn’t it ? 

    You've seen this before when deploying Rollup packages and had to wait for hours before the setup completed or when services simply wouldn't restart successfully after a reboot. Now it seems to affect
    the EMC console as well when the server is not able to connect to the internet. The solution in our case was to go into IE Advanced Options and turn off "Check for Server Certificate Revocation" setting. Once we turned this off the console was available in approx 5 seconds.

Keep it in mind.. it will help you one day Smile

Tonino Bruno | IT Consultant | Pro-Exchange

Posted 04-29-2010 9:53 by Tonino
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