Event ID 6: An I/O operation initiated by the Registry failed unrecoverably.The Registry could not flush hive (file): '…'
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.
An I/O operation initiated by the Registry failed unrecoverably.The Registry could not flush hive (file): '…'.
Event 6
Kernel-General
System log
Error
Image … failed IntegrityCheck reason is
Event 6
Kernel-Boot
System log
Error
The time service encountered an error while reading its configuration from the registry, and will continue running with its previous configuration.
Event 6
Time-Service
System log
Warning
NTFS KSR data restore failed.
Event 6
Ntfs
System log
Warning
Link Up notification
Event 6
StorPort
System log
Information
An error occurred in while attempting to verify the inserted smart card
Event 6
Security-Kerberos
System log
Information
SMB2 Request Echo
Event 6
SMBServer
SMBServer/Operational log
Information
Command-line command set for job … with owner
Event 6
Bits-Client
Bits-Client/Operational log
Information
Automatic certificate enrollment for … failed
Event 6
CertificateServicesClient-AutoEnrollment
Application log
Information