Event ID 105: Event log automatic backup
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.
Event log automatic backup
Event 105
Eventlog
Security / System log
Information
Power source change.
Event 105
Kernel-Power
System log
Information
The Kerberos client could not retrieve passwords for the group managed service account.
Event 105
Security-Kerberos
System log
Error
Task Scheduler failed to impersonate "…" .
Event 105
TaskScheduler
TaskScheduler/Operational log
Error
SMB2 Response Tree Disconnect
Event 105
SMBServer
SMBServer/Operational log
Information