http://blogs.technet.com/b/operationsmgr/archive/2010/07/07/new-kb-attempts-to-opening-the-system-center-operations-manager-2007-console-fails-with-quot-the-client-has-been-disconnected-from-the-server-quot-exception.aspxWhen you attempt to open the System Center Operations Manager 2007 console it may fail with the following exception: =========================================================================================== Date:&#160;&#160;&#160; - Application: Systemen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/operationsmgr/archive/2010/07/07/new-kb-attempts-to-opening-the-system-center-operations-manager-2007-console-fails-with-quot-the-client-has-been-disconnected-from-the-server-quot-exception.aspx#3445174Thu, 04 Aug 2011 18:57:55 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3445174To fix this<p>check the time on the server and client if any of them is off by more than 5 minutes run the net time /set, once this is done try openingthe console again. it worked for me.</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3445174" width="1" height="1">