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ERROR_CLOUD_FILE_PROPERTY_BLOB_TOO_LARGE
A single platform property blob is too large
ERROR_CLOUD_FILE_PROPERTY_BLOB_TOO_LARGE is narrower than the general metadata-size error. It points to one property blob in the platform-managed cloud-file property store. CF_PLACEHOLDER_STANDARD_INFO exposes the aggregate on-disk PropertiesSize, allowing diagnostics to distinguish property storage from file identity and hydrated file data.
Find the operation that creates or updates the property and record the property identifier, version, and byte length before the platform call. A property should contain the compact data required by its consumer, not an unlimited cache of remote metadata. If the format recently changed, verify encoding and compression assumptions and confirm that a length field is measured in bytes rather than characters. Split or externalize large data instead of repeatedly attempting the same blob.
What to inspect
- Log each property identifier and encoded byte size before committing it.
- Check for accidental duplication or incorrect character-to-byte length calculations.
- Keep large provider state outside the platform property store and reference it compactly.
References
- Microsoft: PropertiesSize in standard placeholder information
- Microsoft: retrieving placeholder properties and state
- Microsoft: Cloud Filter API structures and operations
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