Event ID - 7031

Event Id7031
SourceService Control Manager
DescriptionAvailable database--The Diagnostic Facility COM Server service terminated unexpectedly. It has done this 6 time(s). The following corrective action will be taken in 0 milliseconds: No action
Event InformationAccording to citrix:
Cause:

CDFSrv is experiencing a fatal error while initiating the IAccessContol/DCOMAccessControl object used to provide the secured access to COM objects. This is not a Citrix issue because this object belongs to Microsoft and we are tying to get an instance of it while CDFSrv service is being initialized. Also, it’s the first COM object that is initiated after CDFSrv initializes the COM run time (COM API - InitializeCom()). This might be an issue with COM run time on that computer.

Resolution:
This particular object/interface is exposed by the Ole32.dll. Install Microsoft MS04-012 to upgrade this dll. 842070 may also be needed
Reference Linksevent id: 7031 and source:Service Control Manager

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