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E_SYNCENGINE_FILE_SIZE_OVER_LIMIT
E_SYNCENGINE_FILE_SIZE_OVER_LIMIT belongs to Windows cloud-file and sync-engine infrastructure. It marks the file exceeds the sync service or client’s supported per-file size. The useful starting point is the exact API, object and state transition that returned 0x8802B001, because a shell or application message can hide that boundary.
Where this result is raised
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., 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 it is returned, this is a deterministic object-limit result, not remaining account capacity. During a this result investigation, the limit can be evaluated before upload and may differ by service generation or account capability.
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
- Logical file size. for it, this pins the event to an object or resource generation within the Windows cloud-file and sync-engine infrastructure boundary.
- Service limit and client version. for it, this places the event on the lifecycle or transaction timeline within the Windows cloud-file and sync-engine infrastructure boundary.
- Sparse/compressed allocation versus logical length. for it, this separates caller input from environment and service state within the Windows cloud-file and sync-engine infrastructure boundary.
- Upload session creation result. for it, 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 this result investigation, reduce the case while preserving the condition described by the HRESULT.
- First: Compare logical length with the published limit.
- Next: Test a file just below the boundary.
- Then: Upgrade only if the newer contract supports the size.
- Finally: Offer splitting or another storage path where semantically valid.
How to interpret comparison tests
| Control | Interpretation | Hold constant |
|---|---|---|
| Same input, fresh object or connection | If the result disappears, retained lifecycle or ownership state is implicated. | While diagnosing this result, keep the original data, account, device, or timeline parameters unchanged. |
| Same object, reduced operation | If the result follows one specific transition, statement, file, or ceremony step, the failure is localized. | While diagnosing this result, remove only unrelated work and keep the first failing boundary visible. |
| Same stable item ID, second supported path | A change separates local file-system/provider state from remote service state. | While diagnosing it, keep account, remote version and client build fixed. |
What this code does not justify
FILE_SIZE_EXCEEDS_REMAINING_QUOTA is account capacity; FILE_SIZE_OVER_LIMIT applies even with ample quota.
Do not confuse compressed on-disk size with logical upload size.
Verification after correction
Treat it as corrected only when boundary tests below and above the documented limit produce deterministic outcomes; 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 it.
- 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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