OCS front end service fails to start after KB967831

After attempting to install the patch KB967831 on OCS 2007 R2, if you don’t have MS message queue services installed, the install will fail and prevent the front end service from restarting. To fix you need to install the MS messaging queue services + server and reapply the patch. The front end service will then start again without issue.

To install these services quickly, from cmd run:

• ServerManagerCmd -i MSMQ-Services
• ServerManagerCmd -i MSMQ-Server

http://blogs.technet.com/exchangept/archive/2009/05/21/ocs-front-end-service-fails-to-start-after-kb967831.aspx