Log Name: Application
Source: Microsoft-Windows-User Profiles Service
Date: 18/05/2014 16:53:11
Event ID: 1530
Level: Warning
Description:
Windows detected your registry file is still in use by other applications or services. The file will be unloaded now. The applications or services that hold your registry file may not function properly afterwards.
DETAIL -
1 user registry handles leaked from \Registry\User\S-1-5-21-3255131598-1660467936-2835020048-1000_Classes:
Process 852 (\Device\HarddiskVolume7\Program Files\Microsoft Security Client\MsMpEng.exe) has opened key \REGISTRY\USER\S-1-5-21-3255131598-1660467936-2835020048-1000_CLASSES
According to KB947238 this warning this warning is by design:
http://support.microsoft.com/kb/947238/en-gb
Does the occurrence of the warning signify a bug in Microsoft Security Essentials, namely that the software fails to close a registry key after use?
Hope this helps, Gerry
