The FSCController service in Microsoft Forefront Security for SharePoint stops responding after you restart the server. This causes the Realtime Scan Jobs to become disabled.
Additionally, the following Error event may be logged in the System log:
Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7022
The FSCController service hung on starting
To resolve this problem, install Forefront Security for
SharePoint with Service Pack 3 (SP3).
For more information about Forefront Security for SharePoint SP3, click the following article number to view the article in the Microsoft Knowledge Base:
Description of Forefront Security for SharePoint with Service Pack 3
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section.