What does NTSTATUS 0xC000CF0A (STATUS_CLOUD_FILE_NOT_SUPPORTED) mean?

 
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STATUS_CLOUD_FILE_ALREADY_CONNECTED STATUS_CLOUD_FILE_INVALID_REQUEST

STATUS_CLOUD_FILE_NOT_SUPPORTED

Cloud Files capabilities are negotiated through the sync root's policies and the operations implemented by the provider. For example, a root with an ALWAYS_FULL hydration policy cannot perform an operation that would leave a placeholder partially hydrated. A provider may also decline a callback or operation it does not implement.

This is not normally a transient connectivity failure. Diagnose the requested operation, current hydration and population policies, platform version, and provider feature set. Changing retries or waiting for network recovery will not make a deliberately unsupported operation valid.

Useful checks

  • Log the exact CF_OPERATION_TYPE, placeholder state, and policy active for the root.
  • Check whether the operation requires a different hydration policy or an optional provider callback.
  • Offer a supported workflow, such as fully hydrating the file before an operation that cannot run on a placeholder.

Relevant documentation


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