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Event ID 300: NTFS volume dismount has started

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

NTFS volume dismount has started.

Event 300
Ntfs
System log
Information
Message and fields (as Event Viewer shows them) 
NTFS volume dismount has started.

           Volume correlation Id: …
           Volume name: …
           Volume label: …

           Device name: …
           Device GUID: …
           Device manufacturer: …
           Device model: …
           Device revision: …
           Device serial number: …
           Bus type: …
           Native NVMe: …
           
           Adapter serial number: …
           
           Process Id: …
           Process name: …
           
           Reason: …

Perform Adapter NVMe Enumerate.

Event 300
StorPort
System log
Information
Message and fields (as Event Viewer shows them) 
Perform Adapter NVMe Enumerate.                   
NtStatus: …

The Kerberos client discovered domain controller … for the domain

Event 300
Security-Kerberos
System log
Information
Message and fields (as Event Viewer shows them) 
The Kerberos client discovered domain controller … for the domain ….

Begin starting initialization of drivers

Event 300
Kernel-PnP
System log
Information
Message and fields (as Event Viewer shows them) 
Begin starting initialization of drivers

Task Scheduler started Task Engine "…" with process ID

Event 300
TaskScheduler
TaskScheduler/Operational log
Information
Message and fields (as Event Viewer shows them) 
Task Scheduler started Task Engine "…"  with process ID ….