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ERROR_STORAGE_TOPOLOGY_ID_MISMATCH
The storage layout changed during the operation
ERROR_STORAGE_TOPOLOGY_ID_MISMATCH is a Win32 system result. Storage management requests can bind to a particular disk, pool, virtual disk, enclosure, or path topology. This result indicates that the saved identity no longer describes the current arrangement, commonly after failover, re-enumeration, replacement, or topology refresh.
What the result means
The storage topology identifier no longer matches the topology expected by the request. For ERROR_STORAGE_TOPOLOGY_ID_MISMATCH, keep the symbolic name, numeric value, and failing operation together in diagnostics; that combination distinguishes the exact failure path from nearby system results.
What to check
- Refresh disk, volume, pool, and path enumeration before retrying.
- Check for recent device removal, multipath failover, enclosure changes, or virtual-disk reconfiguration.
- Do not use drive letters or ordinal disk numbers as stable identities.
- Correlate the failure with storage service and system event logs.
Recommended handling
Discard stale topology state and rebuild the request using current stable identifiers. If the topology changed during a destructive operation, require a fresh safety check before proceeding.
Developer notes
Bind long-running operations to immutable identifiers where available and validate them again immediately before commit. A blind retry can target a different device after re-enumeration. When a Win32 API reports ERROR_STORAGE_TOPOLOGY_ID_MISMATCH, capture GetLastError() immediately; subsequent cleanup, formatting, or logging calls can replace the thread-local value.
References
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