I hate that, just ran into it myself ... if you download anything from Microsoft and use your password, then it resets that you need a password for Win 10.
Press the "windows key" and "R"
Put into the open: box ... "netplwiz.exe and press OK
A new box comes up with your user name in in the box.
UNCHECK the "Users must enter a user name and password to this computer"
Click on APPLY
A new box comes up with your user name in the top box. Put in your Microsoft Password and confirm it, then press OK. You won't have to log in again.
Let me know if this works for you.
Doug