After I installed Exchange 2007 SP3 RU1 on all of my Exchange servers I get the exact error in the article below on both of my HUB servers when I launch EMC. The link talks about how to fix it on a workstation but no mention of how to fix it on an Exchange server. Anyone run into this problem? http://social.technet.microsoft.com/Forums/en-US/exchangesvradmin/thread/ecec5950-0b4d-4db4-b2a9-71337c221635

Is all necessary services started? Run ExBPA and check for issues?Jonas Andersson MCTS: Microsoft Exchange Server 2007/2010 | MCITP: EMA 2007/2010 | MCSE/MCSA Blog: http://www.testlabs.se/blog

Hi, Please repair .Net Framework on the problematic machine to check the result. If the issue persists, please check whether there is any error message in Event Viewer. If so, please post it here for research. Thanks. Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.