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E_SKYDRIVE_UPDATE_AVAILABILITY_FAIL
Within Windows cloud-file and sync-engine infrastructure, E_SKYDRIVE_UPDATE_AVAILABILITY_FAIL reports that changing the item’s availability state failed at an unspecified provider boundary. Diagnosis of this result should follow the original owner and generation rather than treating the visible symptom as the cause.
Mechanism behind the code
Availability changes can require hydration, dehydration, pin-state metadata, open-handle coordination, or service acknowledgement. Because this HRESULT is broad, retain the nested provider or file-system status instead of assigning one cause from the outer value.
Inspect the local sync root, placeholder state, file-system operation, provider request, network exchange, account policy, or remote storage operation that produced the HRESULT.
High-value telemetry
- Requested availability state.
- Placeholder and pin state.
- Open handles and callbacks.
- Nested provider or Win32 status.
Decision table
- Second supported path for the same stable item: a changed result separates retained object, connection, path, host, or device state from the original input. Hold constant: keep account, remote item version, and client build fixed.
- Reduced failing operation: If this result follows the reduced step, the rejecting transition is localized. Hold constant: retain requested availability state and remove only unrelated work.
- Targeted corrective control: Use this as a diagnostic branch rather than a blanket workaround: query current placeholder state. Hold constant: keep the original failing sample available for the final regression test.
Safe reduction procedure
Use a disposable control object, repository copy, file, or device association where the subsystem permits that safely.
- First: Query current placeholder state.
- Next: Repeat on a closed disposable file.
- Then: Separate local pin metadata from network transfer.
- Finally: Capture the first callback failure.
Do not erase the distinction
During an investigation, FILE_NOT_UPLOADED gives a specific prerequisite; UPDATE_AVAILABILITY_FAIL does not identify which availability substep failed.
Do not delete and redownload the item before preserving its placeholder and provider evidence.
Successful outcome
Verify it with the original scenario, one boundary case, and one deliberate failure; success means pin or unpin reaches the requested stable state and survives close, restart and offline/online transitions.
Technical references
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