ERROR_LOG_METADATA_FLUSH_FAILED - 6645 (0x19F5)
Log metadata flush failed.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_LOG_METADATA_FLUSH_FAILED error code (6645, 0x19F5) indicates that a failure occurred during the process of flushing metadata to an event log. This typically means that the system was unable to write necessary metadata changes to the log file.
Error Details
This error is returned by the Windows operating system when it encounters issues while attempting to flush metadata associated with an event log. Metadata includes information such as timestamps, event types, and other descriptive data that accompany events recorded in the log.
Usage Context
This error can occur in various scenarios where event logs are being managed or updated. It is commonly observed during system operations that involve writing new entries to the event log or when attempting to clear or modify existing log entries.
Developer Interpretation
As a developer, encountering this error suggests that there was an issue with flushing metadata to the event log. This could be due to various factors such as insufficient permissions, corrupted data, or system resource limitations. Developers should review the operation context and ensure that all parameters are valid and within acceptable limits.
Related Errors
ERROR_LOG_CORRUPTED(6702)ERROR_LOG_FULL(6715)ERROR_WRITE_FAULT(4873)
FAQ
Q: What does the ERROR_LOG_METADATA_FLUSH_FAILED error mean?
A: This error indicates that there was a failure in flushing metadata to an event log.
Q: How can I troubleshoot this issue?
A: Review the operation context, validate parameters, and ensure that all required permissions are correctly set. Check for any system resource limitations or corrupted data.
Summary
The ERROR_LOG_METADATA_FLUSH_FAILED error (6645) is a generic error indicating a failure in flushing metadata to an event log. Developers should focus on validating input parameters and ensuring proper operation context when encountering this error.