Press Windows key + R
Type: control userpasswords2
Hit Enter
Uncheck 'Users must enter a user name and password to use this computer'
Click Apply then OK.
Press Windows key + R to open Run.
Type netplwiz into the Run bar and hit Enter.
Select the User account you are using under the User tab.
Check by clicking "Users must enter a user name and password to use this computer" checkbox and click on Apply.
Sign-out and sign-in again to check if issue persist.
also
Open Start > Settings > Accounts > Sign in options
Click in the Require sign in list box
Choose Never
Also - Open Start > Settings > Personalization > Lock screen
Scroll down, click Screen saver settings
Uncheck - on resume, display log on screen