Edit: Update Rollup 18 is now available for Exchange 2010 SP3 see the post Exchange 2010 SP3 Update Rollup 18 installation tips.
Less than three weeks after Microsoft released the Exchange 2010 SP3 Update Rollup 3, they have now released Update Rollup 4. Update Rollup 4 for Exchange Server 2010 SP3 contains the fix for the security issue that is described in MS13-105. This is the only difference between the two Update Rollups.
I’ve not had chance to installed this on my test SBS 2011 server yet, but Update Rollup 3 was remarkably quick to install, it took just 17 minutes from start to finish, and my test SBS server isn’t very powerful. So I wouldn’t expect this to take much longer. UPDATE – The installation took 13 minutes on my test server that already had UR3 installed.
You may want to consider waiting a couple of days before deploying the update rollup in your production environment.
While looking for others experience of installing the update rollup I’ve come across a few suggestions that might help speed the install up and a few best practice tips.
1. Reboot the server prior to installing the update rollup. If it has been up for a while a reboot will make sure it is in a know good state.
2. Run the update from an elevated command prompt.
3. In Internet Explorer, deselect “Check for Publisher’s certificate” and “Check for server certificate revocation”, from Internet Options, Advanced tab, Security options.
4. Disable antivirus software.
5. Have a full backup and a system state backup of the server.
6. Make sure the SBS console is closed if installing the update on SBS 2011.
While the update is installed it will automatically stop Exchange and IIS services, and restart them again once complete.
Once the update has finished, remember to undo the changes made in steps 3 and 4 above.