What does Windows error code 1724 (RPC_S_INVALID_NETWORK_OPTIONS) mean?

RPC_S_INVALID_NETWORK_OPTIONS

Network options are part of the binding syntax

RPC_S_INVALID_NETWORK_OPTIONS refers to the options field of an RPC binding, not to general adapter settings. A string binding is composed from an optional object UUID, protocol sequence, network address, endpoint, and endpoint or network options. Options are interpreted in the context of the selected protocol sequence.

A common design error is to treat the bracketed options text as a free-form query string. RPC transports define what they accept; an option valid for one protocol sequence may be meaningless for another.

What to inspect

• Parse the string with RPC APIs and log the protocol sequence, endpoint, and options as separate fields.
• If the application builds bindings manually, switch to RpcStringBindingCompose so delimiters and empty components are handled consistently.
• Remove undocumented transport options and retry with the minimal binding required for endpoint resolution.

Do not troubleshoot the remote host until the local runtime accepts the binding components. An invalid options field can fail before any endpoint-map lookup or network connection occurs.

References

• Microsoft: String Binding
• The Open Group: rpc_string_binding_compose

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