Exchange 2010 mmc 'snap in not responding'

Turn off (Uncheck) “Check for publisher’s certificate revocation” & “Check for server certificate revocation” options on the server/workstations you are starting the EMC (Exchange Management Console) on

·        In Windows Internet Explorer –> Tools –> Internet Options –> Advanced tab
·        In the Security section, uncheck the below two options “Check for publisher’s certificate revocation” & “Check for server certificate revocation”

How does this relate to the EMC in Exchange 2010  ? well Exchange tries to connect to the certificate revocation list (CRL) Web site. Exchange examines the CRL list to verify the code signing certificate.

I have also noticed that unchecking the two options above speed up the start time of EMS (Exchange Management Shell)


Taken from: http://blogs.technet.com/b/nawar/archive/2011/06/03/exchange-2010-management-console-emc-is-very-slow.aspx