RPC_S_INVALID_NAF_ID - 1763 (0x6E3)
The network address family is invalid.
Updated: Feb 21, 2026
Technical Meaning
The error RPC_S_INVALID_NAF_ID indicates that a network address family identifier provided to an RPC (Remote Procedure Call) function is not valid. This typically occurs when the specified network protocol or address family does not match the expected value required by the RPC service.
Error Details
- Error Name: RPC_S_INVALID_NAF_ID
- Numeric Code: 1763
- Hex Code: 0x6E3
- Short Description: The network address family is invalid.
This error suggests that there was an attempt to use a network protocol or address family that is not supported by the RPC service in question. Common protocols include AF_INET for IPv4 and AF_INET6 for IPv6, but other values may also be valid depending on the specific implementation.
Usage Context
This error can occur in various scenarios where an application attempts to establish a network connection or perform operations that require specifying a network address family. For example, it might appear when using RPC functions such as RpcBindingSetOption or RpcBindingCreate with invalid parameters.
Developer Interpretation
When encountering this error, developers should ensure that the correct network protocol and address family are being used for their operations. This includes verifying the values passed to RPC functions and ensuring they match the expected requirements of the service being accessed.
Related Errors
RPC_S_INVALID_BINDING(1759): Indicates an invalid binding handle.RPC_S_NO_CONTEXT_AVAILABLE(1760): No context is available for this operation.
FAQ
Q: What does RPC_S_INVALID_NAF_ID mean?
A: It indicates that the network address family provided to an RPC function is not valid.
Q: How can I resolve this error?
A: Ensure that you are using the correct network protocol and address family for your operations. Verify the parameters passed to RPC functions and consult the documentation for specific requirements.
Summary
The RPC_S_INVALID_NAF_ID error code signifies an invalid network address family identifier in the context of Remote Procedure Call (RPC) services. Developers should ensure that they are using valid protocol values when interacting with RPC functions to avoid this error.