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ERROR_MOUNT_POINT_NOT_RESOLVED
What ERROR_MOUNT_POINT_NOT_RESOLVED means
The namespace says the path continues on another volume, but the device object used for the create operation cannot correctly reach that target. This indicates a storage namespace or filter-stack mismatch.
Where it appears
- volume mount points and junction-based storage layouts
- file-system filter drivers issuing related opens
- backup, antivirus, and virtualization storage components
Likely causes
- stale mount-point metadata
- volume offline, removed, or remounted
- filter driver using the wrong related device object
- race during volume arrival or teardown
Evidence to collect
- full path and resolved volume GUID path
- mountvol output and volume online state
- filter-manager stack for source and target volumes
- storage and FilterManager events around the failure
How to respond
Refresh mount-point configuration and ensure the target volume is online. Filter drivers must reissue the operation against the correct target volume rather than bypassing attachment checks. Remove stale mount points only after confirming they no longer represent valid data.
Diagnostic interpretation
For this particular status, the decisive evidence is full path and resolved volume GUID path, mountvol output and volume online state. Those details separate the documented condition from unrelated failures that happen to occur nearby.
Record the numeric code together with the symbolic name ERROR_MOUNT_POINT_NOT_RESOLVED, the API or subsystem that produced it, and the first preceding failure. A later cleanup occurrence may describe a consequence instead of the initiating defect.
Example
A diagnostic trace records this result after an operation changes subsystem state. The result investigation should follow the first state-changing call, validate its resulting state, and classify later cleanup messages as secondary evidence.
Implementation guidance
Code handling this result should distinguish a terminal failure from a warning, progress indication, or request to repeat after a defined state change. When handling it, preserve handles and output fields only where the originating API explicitly keeps them valid. The path needs bounded retries and cleanup that tolerates partial initialization.
Validation after remediation
Repeat one controlled operation that previously produced this result. Verify both disappearance of the status and completion of the specific state transition described above. Adjacent messages around it must also be reviewed so a fallback is not mistaken for a complete repair.
References
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