Install of Exchange 2007 SP2 fails with following error snipped form the end of setup logfile: It is Server 2008 R@ 64bit, a search of the registry for the prodcuct code causing the error points me to SP1 rollup 5. Tried to download / reinstall rollup 5, same error. Any help? ************** [11/5/2011 9:26:04 PM] [0] Setup will run the task 'uninstall-msipackage' [11/5/2011 9:26:04 PM] [1] Setup launched task 'uninstall-msipackage -logfile 'C:\ExchangeSetupLogs\ExchangeSetup.msilog' -ProductCode '24b2c164-de66-44fe-b468-a46d9d5e6b31' -PropertyValues 'BYPASS_CONFIGURED_CHECK=1 DEFAULTLANGUAGENAME=ENU'' [11/5/2011 9:26:04 PM] [1] Beginning processing. [11/5/2011 9:26:04 PM] [1] Property 'PackageName' is 'EXCHANGESERVER.msi'. [11/5/2011 9:26:04 PM] [1] Removing MSI package with code '24b2c164-de66-44fe-b468-a46d9d5e6b31'. [11/5/2011 9:32:03 PM] [1] [ERROR] Unexpected Error [11/5/2011 9:32:03 PM] [1] [ERROR] Unable to remove product with code 24b2c164-de66-44fe-b468-a46d9d5e6b31. This update package could not be opened. Verify that the update package exists and that you can access it, or contact the application vendor to verify that this is a valid Windows Installer update package. Error code is 1635. [11/5/2011 9:32:03 PM] [1] [ERROR] This update package could not be opened. Verify that the update package exists and that you can access it, or contact the application vendor to verify that this is a valid Windows Installer update package [11/5/2011 9:32:03 PM] [1] Ending processing. [11/5/2011 9:32:26 PM] [0] End of Setup [11/5/2011 9:32:26 PM] [0] **********************************************

Why are you installing Exchange 2007 SP2? SP3 is the latest version which is what you should be installing. Looks to me like a bad download. I would suggest that you download the service pack fresh from the Microsoft Public site and install from that. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

I was installing SP2 because SP3 also failed, so I was attempting to step up to 2 then hopefully 3 when that was complete. I have downloaded the service pack twice already, with the same result. Should I scrap 2 altogether and just troubleshoot the errors I'm getting installing 3?

I wouldn't consider going backwards in versions. Was Service Pack 3 erroring in an identical way? If you are on Exchange 2007 SP1 with Windows 2008 R2 you are in an unsupported scenario anyway, as I believe SP2 was the first version that is supported with Windows 2008 R2. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

Since 5c321 doesn't appear anywhere in the log above how did you come up with that? I don't see anything about a rollup file in the log above, only a GUID. How am I suppose to translate this guid into a rollup file? Where do I find this rollup file? Can you be more helpful?