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E_FDPAIRING_AUTHNOTALLOWED
E_FDPAIRING_AUTHNOTALLOWED belongs to Function Discovery and PnP-X device pairing. It marks the device or host policy does not permit the requested authentication method. The useful starting point is the exact API, object and state transition that returned 0x8FD00006, because a shell or application message can hide that boundary.
Where this result is raised
Function Discovery separates discovery from association and installation. A device can be visible yet reject a connection, complete discovery but fail authentication, lack a usable profile, or depend on a disabled PnP-X bus component. Pairing evidence must therefore distinguish host policy, provider state, network reachability, device capacity and user-confirmation outcomes.
The ceremony may be technically supported but disabled by device mode, enterprise policy, account role, transport profile or required physical-presence state.
Inspect the discovery provider, pairing handler, association database, network protocol, device ceremony, or PnP-X bus component that returned the HRESULT.
Evidence worth collecting
- Requested authentication method.
- Device mode and policy.
- Host enterprise/device-install policy.
- User role and physical-presence requirement.
A controlled diagnostic sequence
- First: Select a permitted documented ceremony.
- Next: Check device discoverable/pairing mode.
- Then: Review applicable host policy.
- Finally: Keep policy denial separate from bad credentials.
How to interpret comparison tests
| Control | Interpretation | Hold constant |
|---|---|---|
| Same device, controlled host or network | A change separates device-side state from host provider, policy and transport. | Keep firmware and ceremony type fixed. |
What this code does not justify
AUTHFAILURE means an allowed method failed; AUTHNOTALLOWED means the method or operation is prohibited.
Do not weaken global device-install or authentication policy for one device.
Verification after correction
Treat it as corrected only when an approved method succeeds while prohibited methods remain denied by policy; retain the original negative case so fallback cannot be mistaken for repair.
Technical references
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