Update Rollup 5 for Exchange Server 2008 SP1 is now available! It has alot of fixes described below and I would like to attempt to share my gotchas and how-to’s on this update. I’m hoping to make this a three part series and as you may notice, the third one is our "Oppps!" moment, where we have encountered problems on the CAS and Outlook Web Access. I have searched the internet and I found very few that has this problems (hope: plus solutions) after installing the RU5.
Part 1: What is Update Rollup 5? What does it is for?
Part 2. How to install Update Rollup 5?
Part 3. Oppps and OMG! (Troubleshooting after a problematic rollup install)
This is a highly recommended update for all that are using Exchange Server 2007 SP1 and Quoting the Microsoft Update Site http://www.microsoft.com/downloads/details.aspx?FamilyId=652ED33A-11A1-459C-8FFE-90B9CBFE7903&displaylang=en:
"Update Rollup 5 for Exchange Server 2007 Service Pack 1 (SP1) resolves issues that were found in Exchange Server 2007 SP1 since the software was released."
This KB article describes what issues that fixed thru this rollup: http://support.microsoft.com/?kbid=953467