Monday, October 31, 2011
In Exchange Management Console select Server Node and Client Access.
In action pane hit Enable Outlook Anywhere.
Additionally you need to install the Feature RPC over HTTP Proxy of Win200 Server.
Sunday, October 30, 2011
After some digging in the profile, I found out the following file, which seemed to be the cause of the problem:
c:\users\<specific user>\appdata\roaming\microsoft\mmc\Exchange Management Console
Rename or delete this file, restart the EX2010 EMC and all errors will be gone.