Slow Citrix XenDesktop 5 and XenDesktop 5 SP1 MMC

Slow Citrix XenDesktop 5 and XenDesktop 5 SP1 MMC when launching Desktop Studio

Problem: XenDesktop 5 Desktop Studio launches slowly and snap-in fails to load and/or get the following error(s):

"Adding snap-in to console"

"This snap-in not responding"

 

Note: Also, I have seen this in Provisioning Services (PVS) as well

Resolution:  Go to IE > Tools > Internet Options > Advanced and uncheck "Check for publisher’s certificate revocation" in security section.