Post date: May 24, 2012 7:16:18 AM
http://blogs.technet.com/b/exchange/archive/2010/12/07/resolving-winrm-errors-and-exchange-2010-management-tools-startup-failures.aspx
Also see...
http://social.technet.microsoft.com/Forums/en-US/exchange2010/thread/17155f1d-2ece-42aa-985e-05e59ce77951/