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Blackberry Professional Server – Blackberry Controller Service Will Not Start

Today we had a problem on our Blackberry Professional Server where the “Blackberry Controller” service was stopped and would not start.  Trying to manually start the service would give us the following error:

The BlackBerry Controller service terminated with service-specific error 5003 (0x138B).

Luckily, the fix was easy. There seemed to be some contention with this service and the “DNS Server” service on the same machine.  Stopping the DNS Server service, starting the Blackberry Controller service, and then restarting the DNS Server service seemed to fix the problem.