Normally Windows10 will automatically set the printer you used most recently to be your default printer.
For some people this can be annoying.
Luckily you can turn this feature off and manage your default printer manually.
First open settings by clicking the Start menu and selecting the Gear icon on the left, or you can press windows plus I on your keyboard to open it quickly.
In settings, click devices.
In devices, select printers and scanners in the sidebar menu in printers and scanners settings,
Scroll down and uncheck the box beside let Windows manage my default printer.
