The diagnosis must separate network, authentication and SMB compatibility.
Steps.
- Test Target — From a post, go to share with the same account.
- Check DNS/IP —Ensure that the multifunction reaches the server.
- Read 4625 – Search for refusals of authentication.
- Control SMB — Check version and method of supported authentication.
Commands
Test-NetConnection server -Port 445
Key takeaways
- Use a dedicated service account.
- Avoid SMB1 unless temporary restraint is documented.