How to configure Windows subsystem for Linux?

Question

linux

Installed Windows Subsystem for Linux, installed Debian from Windows Store, running. There's a console

Installing, this may take a few minutes...
Please create a default UNIX user account. The username does not need to match your Windows username.
For more information visit: https://aka.ms/wslusers
Enter new UNIX username:

I enter user , I press Enter, and nothing happens. The cursor has moved to another line, and there is no "Create a password" inscription.