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Event ID 307: The Kerberos client has discovered a DMSA migration

Windows Event ID Lookup: What Windows event IDs mean: 4625, 4624, 4740, 6008, 41, 7045, 1102 and 3,000 more, with Windows' own message text, the fields and what to check.

Look up a Windows event ID from Event Viewer, a SIEM alert or a log export: what it means, the fields it records, and what to check. Many IDs are used by more than one source (event 41 is both a Kernel-Power crash and a boot error), so every definition is shown, the one people usually mean first. The message text is Windows' own, read from the event providers of Windows 10.0.26200.0, 2026-10-28; the notes are ours, based on Microsoft's security auditing reference.

Try: 4625, 4624, 4740, 6008, 41, 1074, 7045, 1102, 4104, 1149

The Kerberos client has discovered a DMSA migration

Event 307
Security-Kerberos
System log
Information
Message and fields (as Event Viewer shows them) 
The Kerberos client has discovered a DMSA migration
Old Account Name: …
New Account Name: …
Domain Name: …
Status: …
Migration Complete: …

Task Scheduler service failed to connect to the Task Engine "…" process.

Event 307
TaskScheduler
TaskScheduler/Operational log
Error
Message and fields (as Event Viewer shows them) 
Task Scheduler service failed to connect to the Task Engine "…"  process. Additional Data: Error Value: ….

It took … seconds to write a change file to the BITS job list.

Event 307
Bits-Client
Bits-Client/Operational log
Warning
Message and fields (as Event Viewer shows them) 
It took … seconds to write a change file to the BITS job list. If this is excessive, the number of BITS jobs may be larger than this machine can handle quickly.