Set Your Default Linux Distribution on Windows 10

To view your installed Linux distributions, type the following command and hit Enter:

wslconfig /l
The Linux distribution ending with "(Default)" is your default Linux distribution.

To set your default Linux distribution, run the following command, where Name is the name of the Linux distribution:

wslconfig /setdefault Name
For example, to set Ubuntu as your default Linux distribution, run the following command:

wslconfig /setdefault Ubuntu