Duplicate printers appear (Copy 1, Copy 2)

Go to Settings > Bluetooth & devices > Printers & scanners (Windows 10: Settings > Devices > Printers & scanners). Select each copy in turn and choose Print test page. If several print, keep the one connected the way you prefer, such as the network rather than USB.

On each printer's page, open Printer properties > Ports. The ticked port shows whether that copy uses WSD, an IP address or USB. A copy pointing at an old IP address shows offline and can go.

Select each copy you don't need, choose Remove and confirm. This deletes only that entry; the driver stays installed for the copy you keep.

Open Printer properties for the remaining printer and, on the General tab, edit the name to remove (Copy 1). Click OK, then set it as your default if you use it most.

Reserve the printer's IP address in your router (often called DHCP reservation) so it doesn't change. If the copy you keep uses a WSD port, add a Standard TCP/IP Port with that address on the Ports tab and tick it, so Windows doesn't treat the printer as new.

In Windows 11, go to Settings > Network & internet > Advanced network settings > Advanced sharing settings and turn off Set up network connected devices automatically. In Windows 10, untick the matching option under Change advanced sharing settings in Control Panel. You can still add printers yourself.

In Printers & scanners, open Print server properties, select the Ports tab and delete old IP or WSD ports that no printer uses. If removed copies keep returning, open Device Manager, choose View > Show hidden devices, expand Print queues and uninstall the greyed-out entries.

Some printer apps and software packages add their own printer entry when they install or update. If a copy appears each time, remove all copies, let the software add the printer once, and don't add it separately in Windows.

Open System Settings > Printers & Scanners. Duplicates often have a number or a slightly different name, and one may use AirPrint while another uses the maker's driver. Print a document to each to see which works.

Select each duplicate and click Remove Printer. Keep the copy that prints reliably; AirPrint is usually the most dependable choice when the printer supports it.

If many entries are duplicated or won't remove, Control-click in the printer list and choose Reset printing system. It removes every printer and job, so add your printer once afterwards.