Worked with Win8. Upgraded to Win8.1. No longer worked. Lexmark Live chat said no updated drivers for Win8 and Win8.1. What? It worked with Win8. He said thank you for that info, I'll forward it to our Tech's. I said ...what am I supposed to do? He said I'd have to buy a new printer. Wow thanks Lexmark for all the help. The next day Win8.1 Action Center popped up a message....Download and install the driver for your inkjet printer. Lexmark didn't have drivers for me but Win8.1 found them! Nice!!