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WinXPTutor's XP Resources

Windows XP Tips, Illustrations and registry edits

Multiple instances of "ESENT" in the Event Log - Windows XP SP2

After installing Windows XP SP2, you may see multiple instances of ESENT messages in the Event Log. Those are only informational events (as seen in the Event Viewer), and not errors. Here is a sample:

Event Type: Information
Event Source: ESENT
Event Category: General
Event ID: 103
Date: 8/19/2004
Time: 10:32:27 AM
User: N/A
wuaueng.dll (3048) SUS20ClientDataStore: The database engine stopped the instance (0).

For more information, see Help and Support Center at

More information about the ESENT events - Courtesy of David Kays [MS]


This is a known issue with the WU v5 client.  It has to do with how the client agent interacts with the Jet database engine.  This is something we'll consider fixing in a future version of the WU client.