Hey There, I am Sofia Carter. Update your system to resolve the HP Printer Driver Is Unavailable issue. With a fresh patch for Windows, you can get bug fixes and new features. Press I and the Windows logo key on your keyboard in sync to open the Windows settings menu. Select Update & Security next. Here, click the Updates check button. The download and installation will start right away when updates are available. To test, restart your computer after waiting a few minutes once the procedure is finished.
https://www.hpprintersupportpro.com/blog/resolve-windows-10-printer-driver-is-unavailable-issue/