Don got a laptop and now he's having trouble signing into Windows 10. Leo says to go to account.live.com/password/reset and reset your account. You should be able to reset your password that way.
Don also has a Note 8 and he can't get his authenticator to work. Leo uses a physical authenticator key called the Yubico, which always works because it's hardwired. Text messages can be compromised, or expire if you don't use them right away. Another option is AUTHY, which is great for moving from device to device.