After installing any of OCS 2007 R2 Cumulative updates the front end service does not start up throwing the below error

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This happens if you don’t install the DB2009-update.msi before running the updates.

So what you need to do is grab the update from here 

Then install it by opening up CMD and type DB2009-update.msi poolname=”your ocs pool”

Your OCS poolname doesn’t need to be FQDN

After applying the DB update, your service will start again Smile