SYMPTOMS
After you install Microsoft Internet Security and Acceleration (ISA) Server 2006 or ISA Server 2004 on a computer that is part of a workgroup, the following message may be logged in the event log:
Event ID ( 19011 ) in Source ( MSSQL$MSFW ) cannot be found.
The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer.
You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: (SpnRegister) : Error 1355.
This message may be logged every time that the MSSQL$MSFW service starts.
This problem may occur when Microsoft Data Engine (MSDE) is installed on the computer that is running ISA Server.