Scroll down and turn off the option: “Let Windows manage my default printer.”.

Click on Settings / Devices / Printers & Scanners.

Sure, at the same time I had doubled up on caffeinated beverages, but I like to think it was the default printer issue that pushed me over the edge. Once I found out about this “feature,” I realized it was because I’ve been manually switching printers far too often. I just knew that since November I’ve been uneasy, irritable, occasionally snapping at baristas for no reason. If this has made your life a bit easier, it’s a feature. There is sometimes a thin line between a bug and a feature. It was quietly introduced as a new feature in the November update for Windows 10, and it is turned on by default even though it’s different behavior than any previous Windows version. If you occasionally use a different printer or use Acrobat’s “print to PDF” feature, you have to change the printer back to your regular default the next time you print.

Windows 10 changes your default printer to be the last one that you used.

Windows 10 changes default printer