Microsoft Forefront Security for Exchange Server may
become unresponsive, may stop scanning mail, or may not start. Also, you may not be able to open
the administrative console. If Forefront Security for Exchange Server is running in a clustered environment, you may not be able to fail over to a passive node.
When any of these issues occur, a Dr. Watson error will be generated with
bucket ID 668683526 that references a crash of the FSCController.exe process.
This problem may occur because of a crash of
the FSCController.exe process.
To resolve this issue, install Microsoft Forefront Security
for Exchange Server with Service Pack 2 (SP2).
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
Description of Forefront Security for Exchange Server with Service Pack 2
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section.