Event ID 27: The event logging service encountered an error (res=…) while opening log file for channel … at
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.
The event logging service encountered an error (res=…) while opening log file for channel … at
Event 27
Eventlog
Security / System log
Warning
A Learning Mode policy violation was reported.
Event 27
Kernel-General
System log
Information
The boot type was
Event 27
Kernel-Boot
System log
Information
Automatic Updates is now paused.
Event 27
WindowsUpdateClient
System log
Information
Time Provider NtpClient: The response received from domain controller … is missing the signature.
Event 27
Time-Service
System log
Warning
A peer search for an URL has begun.
Event 27
Bits-Client
Bits-Client/Operational log
Verbose