Ethernet Printer Not Detected: Find the Break

If an Ethernet printer is not detected, confirm its actual LAN port and link, then compare the printer's address with the computer's network before changing drivers.

Physical and IP checks

Confirm the model has an RJ45 Ethernet port; a fax jack is not one.
Check cable and switch/router link indicators.
Read the printer's network report for an assigned address.
Check that the computer can reach the same trusted LAN and isn't isolated by a guest network.

Windows checks

Try Add device first. If discovery fails but the address is known, use manual TCP/IP addition. If a test page still fails, inspect the queue and the saved port address before replacing the driver.

Official references

support.microsoft.com
support.microsoft.com

Useful next steps

Find your model

Check the exact model before choosing a method.

Guided fix

Follow the least disruptive checks first.

Found a mismatch? Request a correction with the public source URL and exact model, without passwords or full serial numbers.