After yesterdays Windows 10 Update, my windows OS created a new user called "Alex.DESKTOP-XYZ". As seen in "C:\Users". My old user account was "Alex".
Now I have two user folders and the default login user is "Alex.DESKTOP-XYZ". Although I can access all my files on the old "Alex" account by going into "C:\Users\Alex", I'd like to go back to it being my default login account.
Why did Windows 10 create a new user account folder? And how can I switch back?