Symptoms

After upgrading to BES version 5.x, it is no longer possible to start the BlackBerry User Administrator Service (BESUserAdminService). The following error is logged as a system event:
( BlackBerry User Administration Service ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: Init: Could not validate database version.

or

Could not start BlackBerry User Administration Service on LocalComputer.


Cause

A new web-based Blackberry Administration Service has been introduced in version 5.x; the old one is not needed anymore. The old BlackBerry User Administrator Service has been switched  to a manual state by the BES 5 installer. Refer to Replacing the BlackBerry Manager with the BlackBerry Administration Service for details.

Additional information

Refer to the following article for more details: http://www.besadmin.info/KB04045/System-Error-1069-occurs-when-starting-BlackBerry-Enterprise-Server-services