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| ERROR_CLOUD_FILE_READ_ONLY_VOLUME | ERROR_CLOUD_FILE_VALIDATION_FAILED |
ERROR_CLOUD_FILE_CONNECTED_PROVIDER_ONLY
An ordinary process attempted a connected-provider management operation
ERROR_CLOUD_FILE_CONNECTED_PROVIDER_ONLY enforces ownership of placeholder-management operations in an active sync root. By default, only the connected sync provider can manage placeholders while the root is active. Registration policies can selectively allow non-provider processes to create, convert, or update placeholders, but those permissions must be explicitly enabled.
Determine which process issued the operation and whether it owns the current CFAPI connection key. Helper tools, shell extensions, repair utilities, and updater processes should send the request through the provider or operate only under a deliberately configured placeholder-management policy. Running elevated does not automatically make a process the connected provider and should not be used to bypass the ownership model.
What to inspect
- Log caller process identity and whether it owns the root's active connection.
- Review CF_PLACEHOLDER_MANAGEMENT_POLICY flags registered for the root.
- Route management work through the connected provider unless delegation is intentional.
References
- Microsoft: placeholder-management policy for active roots
- Microsoft: connection key and provider ownership
- Microsoft: placeholder management operations
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