If your printer recognized as unknown device on your Windows computer, you cannot print or scan remotely. To fix this problem, follow the below-mentioned troubleshooting steps.
Solution 1: Remove and reinstall the printer driver
On your Windows computer, click the Start menu available at the bottom-left corner of the screen.
Type ‘control panel’ in the search panel and hit the Enter key.
From the search result, double-click the Control Panel app.
Click on Devices and Printers, and then when you see the devices listed, delete the printer driver that is being detected as an unknown device.
Alternately, you can also run the printer driver uninstaller tool to remove the driver installed on your computer.
After removing the printer driver, restart your computer and reinstall the latest version of the printer driver using the Windows built-in printer driver or by downloading the driver package from your printer’s official site.
Solution 2: Delete the printer driver and reinstall it using the INF file
On your Windows computer, open the Control Panel app.
Click on Devices and Printers and delete the printer recognized as unknown device.
Run the printer driver uninstaller to remove the printer driver installed on your computer.
Next, download the INF file and navigate to the devices and Printers window.
Choose your printer’s icon and click the Print server properties menu at the top.
In the Printer Server Properties window, click the Drivers tab and select the Change Driver Settings button. If it is not available, click the Add button.
In the Add Printer Driver Wizard window, click Next and choose your processor.
Next, click the Have Disk button and select Browse to choose your INF file.
Once selected, follow the on-screen prompts to complete the driver installation.
Finally, connect your printer to the computer using a standard USB cable and check if the printer recognized as unknown device problem has been resolved.