Windows Update blocked the unsigned driver. Fix: Disable driver signature enforcement temporarily:
The auto-detect feature failed. Fix: On the printer’s physical screen, go to Device Settings > Paper Tray Settings . Manually assign the paper type (Plain, Heavy, Glossy). Then, on your PC, go to Printing Preferences > Paper Source and refresh.
Even with the correct file, things can go wrong. Here are the top five problems and their solutions.
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