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HNS_REQUEST_UNSUPPORTED
HNS_REQUEST_UNSUPPORTED is an HRESULT used by Windows Host Networking Service (HNS). It indicates that the operation, schema field, or combination of settings is unsupported on the current host.
What to check for HNS_REQUEST_UNSUPPORTED
- Check the HNS or HCN API and Windows release support for the requested feature.
- Verify the target network mode because an operation may be supported only by selected drivers.
- Use a documented alternative rather than retrying the same unsupported request.
For HNS_REQUEST_UNSUPPORTED, Microsoft documentation on Windows container networking and HNS
Diagnostic interpretation of HNS_REQUEST_UNSUPPORTED
HNS_REQUEST_UNSUPPORTED has the HRESULT value 0xC03B0015. AllStat records the condition as “The specified request is unsupported.”. For HNS_REQUEST_UNSUPPORTED, in practice, interpret that wording at the boundary owned by the Windows component or COM interface that returned the HRESULT, rather than treating the value as a generic Windows message.
Evidence to capture for HNS_REQUEST_UNSUPPORTED
- Record the exact COM method or Windows API, its input object, the calling thread, and the full 0xC03B0015 value before a wrapper converts it to an exception or Boolean result.
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions HNS_REQUEST_UNSUPPORTED or the hns / request operation.
- Reproduce HNS_REQUEST_UNSUPPORTED with the smallest valid input and note whether the result changes with identity, architecture, service state, or target object.
Retry and recovery for HNS_REQUEST_UNSUPPORTED
Retry HNS_REQUEST_UNSUPPORTED only when the owning API documents a transient state or after the condition described as “The specified request is unsupported.” has changed. For HNS_REQUEST_UNSUPPORTED, configuration, policy, format, and authorization failures normally require correction first; an immediate loop can hide the original call site and add secondary errors.
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