Hello I'm having problems trying to install Exchange 2007 Update Rollup 5. I tried two ways for this: My local WSUS 3 and standalone installer. Both produce same results: - update is installed successfully - all services is set to start automatically - after rebooting the system only MSEchangeADTopology service starting - trying to manually any start other exchange services fails with Service failed to respond in a timely fashion - uninstalling update solved the problem My setup: MS Windows Server 2003 SP2 R2 Enterprise x64 with last updates .Net Framework 2.0 + KB926766, KB928365, KB942084 MS Exchange Server 2007 Enterprise x64 Roles installed: Mailbox, Client Access, Hub Transport, Unified Messaging Updates installed: Update rollups 1, 2, 3, 4 ~160 mailboxes Server is hosting Active Directory Global Catalog Any ideas? I disabled this Update Rollup in my WSUS, but what about upcoming SP1? I have another server with only Client Access role installed which is not DC\GC update working just fine. It seems to be the same problem here: http://msexchangeteam.com/archive/2007/10/26/447356.aspx Michael said: I have finished installing RU5 for using 5 hours. And found that all Exchange Services (except SA & IS) cannot be started even by manual. I am now waiting for another 2 hours to uninstall it but still in process. Anyone can help? November 1, 2007 1:51 PM

I got the same problems. I have a single server with the Mailbox, CAS and Hub transport installed. After the update most services failed to start (SA, IS did start however). I uninstalled the rollup 5. I previously had installed rollup 4, so I am again at rollup 4 level. I also hope this is not a preview of SP1. Bart.