HP Scanner not working issue occurs due to many reasons such as scanner not connecting with your computer, sometimes the error happens due to software issues, or your HP scanner is not properly maintained. To fix the scanner not working problem you should check the wires and cables are secured correctly.
While scanning you should ensure the VPN is disconnected on your computer. Additionally, you can try this troubleshooting method open run dialogue box and type “services.msc”, click “ok”, from the list choose “windows image acquisition”. Now ensure the “Startup type” is automatic and click “stop” under service status and click “start”, now click “ok”. HP scanner not working problem resolved.