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ERROR_QUOTA_ACTIVITY
The requested operation failed due to quota operation is still in progress.
ERROR_QUOTA_ACTIVITY is Win32 error 810 (0x32A) and belongs to filesystem quota processing.
Where the result appears
- Quota recalculation after policy or ownership changes.
- Volume maintenance updating quota indexes.
- Administrative quota configuration on a busy filesystem.
- A file operation that intersects an unfinished quota transaction.
Likely causes
- quota accounting is still rebuilding or committing changes.
- a previous quota operation is holding the relevant metadata lock.
- large ownership changes have created a backlog of quota updates.
- the volume resumed after interruption and must finish quota recovery.
Troubleshooting steps
- Record volume, user or SID, quota threshold, and requested operation.
- Record quota-management event log entries around the failure time.
- Record whether quota tracking is rebuilding, enabled, or disabled.
- Record pending ownership changes and filesystem health.
- Record duration and progress indicators for the active quota operation.
What to verify
Verify whether quota accounting is still rebuilding or committing changes. Check volume, user or SID, quota threshold, and requested operation together with quota-management event log entries around the failure time.
Handling, retry, and recovery
Treat the result as a transient state only while progress is visible. Wait for quota processing to finish, then re-read the effective quota before retrying the original operation.
Difference from nearby codes
This condition differs from exceeding a quota: it reports quota work in progress rather than a final decision that the account has no remaining allocation.
Practical example
An administrator enables quotas on a large volume and immediately changes another quota entry.
References
- Microsoft: System Error Codes (500–999) — reference for error 810.
- Microsoft: File management functions — reference for error 810.
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