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RPC_NT_INVALID_AUTH_IDENTITY
The supplied RPC credentials cannot form a valid security context
This status means RPC could not use the credential structure or identity handle supplied for authentication. The selected authentication service determines the expected identity format.
For example, Windows authentication services use SEC_WINNT_AUTH_IDENTITY-style data, while Schannel and other services have different requirements. Check memory lifetime and character encoding as well as the credential values.
What to inspect
- Verify the identity structure matches the selected authentication service.
- Keep credential memory valid for the required binding lifetime.
- Check domain, user, password, certificate and package-specific error details.
References
- Microsoft: RpcBindingSetAuthInfoEx
- Microsoft Open Specifications: MS-RPCE
- Microsoft Open Specifications: NTSTATUS values
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