Unable to resolve host name in WSL
Solution 1:
I don't know why it happens (please improve the answer with an explanation), here is a working solution for this problem:
1. Execute:
nano /etc/hostname
Type your machine name in capital letters ( it would be something like DESKTOP-SOMETHING). Delete anything besides your machine name.
Save and exit.
2. Then, execute:
nano /etc/hosts
Then, Make sure the file's first two rows looks as follows:
127.0.0.1 localhost.localdomain localhost
127.0.1.1 DESKTOP-SOMETHING
Save and exit.