Select Start 
+ Settings 
+ Bluetooth & devices 
+ Printers & scanners 
Under Printer preferences, make sure Let Windows manage my default printer is turned Off.
In the list of installed printers, select the desired printer to be set as the default.
Next to the printer's name, select the Set as default button. The Printer status: under the printer's name changes to Default.
Note: If the Set as default button isn't visible next to the printer's name, make sure the setting Let Windows manage my default printer from one of the previous steps is switched Off.