To enable debug logging for the Virus Scan Engine:
- Open Registry Editor (regedit.exe).
 - Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TMFilter\Parameters.
 - Change the value of "DebugLogFlags" to "00003eff".
 - Perform the steps that led to the scanning issue you encountered.
 - Check TMFilter.log in %windir%.
 
Note:
Disable debug logging by restoring the value of "DebugLogFlags" to "00000000".
		