While the May 2020 update for Windows 10 didn't cause too many issues, we can't say the same for the June 2020 update. SlashGear reports how the company's support forums are being flooded with user complaints about not being able to print on any printer—and that even includes "printing" documents into a PDF.
The issue surfaced with update KB4557957, which was released last week. Microsoft acknowledges the problem but doesn't go into detail about it. The Windows 10 print spooler may error out or close, preventing users from printing. It might even take down the app trying to print, so remember to save the work you're doing. There is no official fix for the issue yet. Microsoft says it's still "investigating" the problem.
If you want to attempt to "fix" it temporarily, you can try a PCL6 driver for your printer to get it working again. We caution you against this if you aren't too familiar with how your PC works. Or you can opt to uninstall the update, but that would take with it whatever bug or security fix it comes with.