What does Windows error code 15808 (ERROR_STATE_WRITE_SETTING_FAILED) mean?

ERROR_STATE_WRITE_SETTING_FAILED

A state setting could not be written

ERROR_STATE_WRITE_SETTING_FAILED reports that a value update was not committed. The in-memory application state may therefore differ from what will be seen after restart.

Common causes

• Disk space, quota, or repository availability problems.
• The value is incompatible with the expected type or schema.
• Another writer changes or locks the same container.
• Policy or access control makes the scope read-only.

Recommended diagnostics

Record the value type and size without logging sensitive contents. Confirm whether a transaction was rolled back and whether a subsequent read returns the old or new value.

Application behavior

Do not report “saved” until persistence succeeds. Keep retry logic bounded and surface a clear warning when user changes remain only in memory.

Consistency with the UI

If a save operation fails, keep the interface from implying that the change is durable. Either revert the displayed value, mark it as unsaved, or keep a pending state that the user can retry explicitly.

Reliability testing

Test full disks, quota exhaustion, read-only profiles, process termination during commit, and simultaneous writers. The expected result should be either the complete old value or the complete new value, never a partially encoded record.

References

• Microsoft: System error codes 15000–15999
• Microsoft: Store and retrieve app data