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E_SKYDRIVE_FILE_NOT_UPLOADED
The scope of E_SKYDRIVE_FILE_NOT_UPLOADED is Windows cloud-file and sync-engine infrastructure: an action required remote availability before the pending upload completed. Preserve 0x80270263 beside the returning call before cleanup or retry creates a more generic secondary failure.
Read the boundary first
When it is returned, a Windows sync engine coordinates local NTFS objects, provider metadata, remote identifiers, quota and naming rules, placeholder hydration, network authentication, and asynchronous upload or download state. During a this result investigation, the same Explorer action can cross several of those boundaries, so diagnosis must retain the first failing stage rather than treating every code as a generic connectivity problem.
During a this result investigation, local existence does not imply the service has a committed remote version. Operations such as sharing or changing remote availability can race an upload that is queued, transferring, conflicted, or blocked.
The first owner to inspect is the local sync root, placeholder state, file-system operation, provider request, network exchange, account policy, or remote storage operation that produced the HRESULT.
Keep neighboring conditions separate
When it is returned, E_SYNCENGINE_FILE_IDENTIFIER_UNKNOWN means the mapping cannot be found; FILE_NOT_UPLOADED can be a known local item with no committed upload.
Do not fabricate a remote URL or treat local close as upload completion.
Incident record for this HRESULT
| Capture | Diagnostic value |
|---|---|
| Local file identity and version for it. | This provides a stable comparison across retries or another machine and helps test the Windows cloud-file and sync-engine infrastructure boundary. |
| Upload state and transfer ID for it. | This identifies the exact object or resource generation involved and helps test the Windows cloud-file and sync-engine infrastructure boundary. |
| Remote item identifier for it. | This places the failure on the lifecycle or transaction timeline and helps test the Windows cloud-file and sync-engine infrastructure boundary. |
| Last provider error for it. | This separates caller input from environment and service state and helps test the Windows cloud-file and sync-engine infrastructure boundary. |
Reproduce without destroying evidence
The investigation should change one variable at a time and keep the original failing sample.
- First: Wait for a committed remote identifier.
- Next: Surface progress rather than repeating the action.
- Then: Resolve upload conflict or block first.
- Finally: Verify the remote version before dependent operations.
Three useful controls
- Second supported path for the same stable item: for it, a changed result separates retained object, connection, path, host, or device state from the original input. Hold constant: for it, 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: for it, retain local file identity and version and remove only unrelated work.
- Targeted corrective control: Use this as a diagnostic branch rather than a blanket workaround: wait for a committed remote identifier. Hold constant: for it, keep the original this result sample available for the final regression test.
Definition of done
Closure for it requires the dependent action runs only after the exact local version is committed remotely; then repeat the next lifecycle operation to detect stale state.
Technical references
The references below define the API family or storage/protocol behavior used to interpret this result.
- Microsoft: Build a Cloud Files sync engine
- Microsoft: Cloud Filter API reference
- Microsoft: Determine cloud placeholder state
- Microsoft: Restrictions and limitations in OneDrive and SharePoint
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