you can access UAC through Control Panel > User Accounts > User Account > Change User Account Control Settings. The default User Account Control settings is set to Notify me only when apps try to ...

You can open the User Account Control Settings window and change it accordingly. Windows should save the change immediately without restarting your computer, whether you are upgrading or ...

Choose "Yes" in the User Account Control prompt ... head into Settings > Accounts > Sign-In Options > Password, click "Change ...

As you can see from the image above, there is no field to type in a password and Yes is grayed out. Turning off UAC might resolve this, but it’s strongly recommended to NOT turn off UAC.