WSD Printer Port Problems in Windows
WSD is not automatically wrong, but it can be part of discovery, generic-driver, and connectivity problems. Brother's current support guidance documents WSD-specific troubleshooting and situations where avoiding a generic WSD-created queue matters.
What to check
Do not change the port until you confirm the printer is actually reachable.
Find the printer's current IP address and test it from the affected computer first.
Check the queue's installed driver and port.
Open Printer properties and inspect the Ports tab. Record the current setting before changing anything.
Look for a generic driver or duplicate WSD-created queue.
Brother notes that its manual add procedure can prevent Windows from adding a generic driver in WSD-related troubleshooting.
If the manufacturer supports it, install the full/correct driver package.
Use the exact model's official support page rather than a third-party driver download site.
For a fixed/stable printer IP, a Standard TCP/IP port may be appropriate.
Brother publishes a procedure for adding a TCP/IP port. Make sure the port IP matches the printer's actual address.