The most obvious cause of HP printer in error state is the latest software update or change. It disrupts the connection between your computer and printer. Here’s how to fix HP printer in error state on Windows 10. Check for any new updates on your software. Go to the settings and check if the printer is online and set as default device. You can check if the printer is working on any other device and if it is working there. Check for latest updates and update the printer driver. Make sure that the connection between computer and printer is established properly.