Windows update error "DtaStor FATAL: Failed to initialize datastore, error = 0xC80003F3"

Hi,

I am using Windows 7 64bit SP1

I have error when trying to run windows update. error message on the windowsupdatelog are:

2013-02-28    01:38:43:273    1184    5d6d0    AU    ###########  AU: Initializing Automatic Updates  ###########
2013-02-28    01:38:43:306    1184    5d6d0    DtaStor    FATAL: Failed to initialize datastore, error = 0xC80003F3
2013-02-28    01:38:43:306    1184    5d6d0    Agent    WARNING: GetServiceList failed with error 0xc80003f3.
2013-02-28    01:38:43:306    1184    5d6d0    AU    WARNING: QueryRegisteredProvider failed with error 0xc80003f3
2013-02-28    01:38:43:306    1184    5d6d0    AU      # Approval type: Scheduled (User preference)
2013-02-28    01:38:43:306    1184    5d6d0    AU      # Scheduled install day/time: Every day at 12:00
2013-02-28    01:38:43:306    1184    5d6d0    AU      # Auto-install minor updates: Yes (User preference)
2013-02-28    01:38:43:306    1184    5d6d0    AU      # Will interact with non-admins (Non-admins are elevated (User preference))
2013-02-28    01:38:43:337    1184    5d6d0    DtaStor    FATAL: Failed to initialize datastore, error = 0xC80003F3
2013-02-28    01:38:43:337    1184    5d6d0    AU    FATAL: Failed to get session from datastore, error = 0xC80003F3
2013-02-28    01:38:43:337    1184    5d6d0    AU    FATAL: Failed to Unserialize from data store, error = 0xC80003F3
2013-02-28    01:38:43:337    1184    5d6d0    AU      # WARNING: Exit code = 0xC80003F3
2013-02-28    01:38:43:337    1184    5d6d0    AU    ###########  AU: Uninitializing Automatic Updates  ###########
2013-02-28    01:38:43:337    1184    5d6d0    AU    WARNING: InitAUComponents Failed, will restart AU in 30 mins, error = 0xC80003F3
2013-02-28    01:38:43:337    1184    5d6d0    AU    AU Restart required....

Can some one please assist me with this problem. I just found out my last windows update was Feb 2012

Thanks,


MesMel