Error Event ID 11852 SMSClient

In my case XP client with installed Forefront Endpoint Protection 2010 client and SCCM 2007 client was notified that is not reporting to the configured FEP 2010 server. In the client's application event log there were error events with event id 11852 from smsclient source:

Failed to evaluate baseline content
1. Error executing discovery transform. The SDM model may be bad. Exception :System.Xml.Xsl.XslTransformException: An error occurred during a call to extension function 'query'. See InnerException for a complete description of the error. ---> System.TypeInitializationException: The type initializer for 'System.Management.MTAHelper' threw an exception. ---> System.Runtime.InteropServices.COMException (0x80131701): Retrieving the COM class factory for component with CLSID {A8F03BE3-EDB7-4972-821F-AF6F8EA34884} failed due to the following error: 80131701.

Also, in the client's system event log there were error events with event id 59,58 from SideBySide source:

Generate Activation Context failed for C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\WMINet_Utils.dll. Reference error message: The operation completed successfully.

and

Syntax error in manifest or policy file "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\WMINet_Utils.dll" on line 0.

XP client had already installed framework 3.5 sp1. After repairing framework installation, fep 2010 client (SCCM) started reporting to fep2010 (SCCM) server and error events in event logs were gone.

Restart is required for installation of Forefront Endpoint Protection 2010 to continue

You may experience following error messages when you try to install Microsoft Forefront Endpoint Protection 2010 :

After rebooting the server, installation of FEP 2010 will not continue and will request from you to reboot the server again in endless loop. You can avoid this behavior by first copying the content of the PendingFileRenameOperations key from HKLM\SYSTEM\CurrentControlSet\Control\Session Manager and then remove the content of the suggested PendingFileRenameOperations key. Save the key, and restart the setup of the FEP 2010, it should continue with installation.

EMC Networker backup client failed to backup data on server installed with Microsoft Forefront Endpoint Protection 2010

You may experience following error when you try to backup server with EMC Networker and installed Microsoft Forefront Endpoint Protection 2010 :

ERROR: VSS failed to initialize for directives, error=0x80042308: The specified object does not exist.

The reason for this error is that Forefront VSS writer is missing some of the VSS components that Networker queries before starting backup. Solution for this behavior is to disable FEP 2010 VSS writer. This can be done by commenting FepWriterManager part in AgentComponents.xml used by FEP 2010. More on how this can be accomplished on http://support.microsoft.com/kb/2570654/en-us .