2.Corrupted McSubDb.Dat file Location (Windows XP)
C:\Documents and Settings\All Users\Application Data\McAfee\MSC
(Windows Vita and Windows 7)C:\program data\McAfee\MSC.
3.If there is no McSubDb.Dat file, then check whether you have McSubDb.bak file under C:\Documents and Settings\All Users\Application Data\McAfee\MSC\Cache
(Windows Vista and Windows 7)C:\program data\McAfee\MSC\Cache
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