Blackberry Administration Service keeps stopping with event ID 7031

I just had a BES Server where the Administration service - Application service would keep starting and then stopping.
Turns out that the service was competing with M$ DNS Server for the ports.
To fix this open the registry editor and navigate to:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

-Right-click ReservedPorts, and then click Modify.
Paste these ports in the list:
48855-48858
45588-45588
49955-49955
45599-45599