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E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE
E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE belongs to Windows cloud-file and sync-engine infrastructure. It marks the remote service requested that synchronization be delayed. The useful starting point is the exact API, object and state transition that returned 0x8802B006, because a shell or application message can hide that boundary.
Where this result is raised
For E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, 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. When E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE is returned, 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.
When E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE is returned, service throttling is a flow-control signal. During a E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE investigation, a correct engine preserves queued work, honors retry guidance and avoids turning a temporary pause into many parallel requests.
For E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, 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.
Evidence worth collecting
- Service response and retry-after guidance. For
E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, this pins the event to an object or resource generation within the Windows cloud-file and sync-engine infrastructure boundary. - Account and request class. For
E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, this places the event on the lifecycle or transaction timeline within the Windows cloud-file and sync-engine infrastructure boundary. - Queue depth. For
E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, this separates caller input from environment and service state within the Windows cloud-file and sync-engine infrastructure boundary. - Backoff and jitter state. For
E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, this creates a stable comparison across retries or another machine within the Windows cloud-file and sync-engine infrastructure boundary.
A controlled diagnostic sequence
During a E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE investigation, reduce the case while preserving the condition described by the HRESULT.
- First: Stop issuing the throttled request class.
- Next: Honor bounded retry-after/backoff.
- Then: Keep local changes durable.
- Finally: Resume gradually and observe service response.
How to interpret comparison tests
| Control | Interpretation for E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE | Hold constant |
|---|---|---|
| Same input, fresh object or connection | For E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, if the result disappears, retained lifecycle or ownership state is implicated. | While diagnosing E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, keep the original data, account, device, or timeline parameters unchanged. |
| Same object, reduced operation | For E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, if the result follows one specific transition, statement, file, or ceremony step, the failure is localized. | While diagnosing E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, remove only unrelated work and keep the first failing boundary visible. |
| Same stable item ID, second supported path | For E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, a change separates local file-system/provider state from remote service state. | While diagnosing E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, keep account, remote version and client build fixed. |
What this code does not justify
For E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, REQUEST_BLOCKED_BY_SERVICE may deny a specific request; PAUSED_BY_SERVICE describes broader throttling delay.
For E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE, do not bypass throttling with parallel accounts, processes or request storms.
Verification after correction
Treat E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE as corrected only when queued changes resume once, in order, after the service permits traffic; retain the original negative case so fallback cannot be mistaken for repair.
Technical references
The references below define the API family or storage/protocol behavior used to interpret E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE.
- For
E_SYNCENGINE_SYNC_PAUSED_BY_SERVICE: 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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