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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
This is a deterministic object-limit result, not remaining account capacity. The limit can be evaluated before upload and may differ by service generation or account capability.
Evidence worth collecting
- Logical file size.
- Service limit and client version.
- Sparse/compressed allocation versus logical length.
- Upload session creation result.
A controlled diagnostic sequence
- 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 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
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
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