Installing Exchange rollup fixes
While I certainly see the value in Windows 2008 UAC (User Access Control), it can be a big pain, too. Too often, you can try to run a program only to have the program fail for no reason. I have seen this recently with Exchange 2010 Rollup fixes. Today while installing E2K10 SP2 RU3, I had an issue where the installer appeared to run, but failed within a minute or two and gave no obvious reason.
The Windows Application Event log had 2 fairly generic errors:
Windows Installer installed an update. Product Name: Microsoft Exchange Server. Product Version: 220.127.116.11. Product Language: 1033. Manufacturer: Microsoft Corporation. Update Name: Update Rollup 3 for Exchange Server 2010 Service Pack 2 (KB2685289) 14.2.309.2. Installation success or error status: 1603.
The fix for this, though, is pretty simple. Open up a command prompt as an administrator and simply run the patch from the command line. In my case, I just typed:
Then the roll-up installs correctly (and it does take 30-45 minutes to complete).