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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
Service throttling is a flow-control signal. A correct engine preserves queued work, honors retry guidance and avoids turning a temporary pause into many parallel requests.
Evidence worth collecting
- Service response and retry-after guidance.
- Account and request class.
- Queue depth.
- Backoff and jitter state.
A controlled diagnostic sequence
- 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 | Hold constant |
|---|---|---|
| Same stable item ID, second supported path | A change separates local file-system/provider state from remote service state. | Keep account, remote version and client build fixed. |
What this code does not justify
REQUEST_BLOCKED_BY_SERVICE may deny a specific request; PAUSED_BY_SERVICE describes broader throttling delay.
Do not bypass throttling with parallel accounts, processes or request storms.
Verification after correction
Treat it 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
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