When I run the best practice analyser I keep getting a message about the minuserdc and wants me to edit this setting in the registry. I cant seem to locate this key in Windows 2008R2 enterprise. HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeDSAccess\Profiles\Default Can some one tell me the best way to resolve this?Preston Thornhill

Hi Preston, Is this error message in the Exbpa? PDC emulator is not excluded from the Active Directory Access (ADAccess) topology A recommended value for the 'MinUserDc' registry entry on server 'EXCH2010.xxx.xxx' should be between 1 and 1. As a best practice, create this registry entry to avoid overloading the PDC emulator. Please try to create a registry value in the HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchange ADAccess Frank Wang TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com 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.

I would be happy to create the value in the reg but I am concerned as the MSExchangeADAccess key does not exist either.Preston Thornhill

Hi Preston, There is a blank space between MSExchange and ADAccess. Please check again. Frank Wang TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com 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.

Ok I added the keys thanks.Preston Thornhill