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STATUS_ADDRESS_ALREADY_EXISTS
The local transport address is already in use
These statuses describe transport endpoint and connection state. For STATUS_ADDRESS_ALREADY_EXISTS, they can appear below higher-level file sharing, DFS, redirector, RPC, or networking code before the error is translated to Win32 or Winsock form.
This status is raised when opening or associating a transport address that is already present. It is a local binding conflict, not proof that a remote host is misbehaving.
For STATUS_ADDRESS_ALREADY_EXISTS, for diagnostics, capture the endpoint address, address family, connection object, local and remote close/reset events, timeout, route, ICMP condition when available, and the higher-level component that issued the transport request.
What to inspect
- Check local address, port, protocol, and compartment.
- Find the process or driver that already owns the endpoint.
- Review exclusive-address and reuse-address policy.
References for STATUS_ADDRESS_ALREADY_EXISTS
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