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PEER_E_UNABLE_TO_LISTEN
Where the peer stack rejects the operation
PEER_E_UNABLE_TO_LISTEN — HRESULT 0x80632096 marks the local peer could not establish the listener required for graph or group connections, commonly because the requested port or binding is unavailable. Treat it as a group membership result rather than a generic peer-networking failure.
Peer Grouping layers membership credentials, roles, record signing and encrypted connections on top of graphing and PNRP. Local open state, online connection state and authorization state are separate.
Evidence to preserve before retrying
- Record the first failing surface among PeerGraphListen, group listener setup and socket ownership tools.
- Preserve requested port, IPv6 addresses, socket bind error, owning process, firewall profile, graph/group status and listener configuration.
- Place successful creation or discovery, state-changing events and the failing call on one timeline.
- Keep peer names, identities, record identifiers, invitation data and endpoints in their original Unicode or binary representation.
Controlled isolation
Bind/listen on a known free port in a disposable graph or group and compare with the configured port. Change one variable only; simultaneous changes to identity, cloud, database and firewall state destroy attribution.
| Checkpoint | Question for this HRESULT |
|---|---|
| Before the API | Was the required GMC trust chain obtained in this process and user context? |
| At the HRESULT | Preserve requested port, IPv6 addresses, socket bind error, owning process, firewall profile, graph/group status and listener configuration. |
| After correction | free or change the port, correct address binding and create the appropriate firewall rule only after confirming the intended listener. |
Neighboring result
PEER_E_ALREADY_LISTENING differs because unable-to-listen means no listener was established; already-listening means one is already active. Keep both HRESULT values in chronological order because a corrected prerequisite can expose the next validation stage.
Safe response
Free or change the port, correct address binding and create the appropriate firewall rule only after confirming the intended listener. Preserve durable graph databases, group exports, identity certificates and invitation artifacts before changing them.
References
- Microsoft: Grouping API functions — it uses this source for the documented peer boundary.
- Microsoft: How to connect to a peer group
- Microsoft: How group security works
- Microsoft Open Specifications: Peer-to-peer grouping overview
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