Similar to:
Windows 8: how to stop auto login
But for Windows 10. I have my own password protected user account, but my wife doesn't have a password on her's. So whenever I turn on the computer when she was the last one to use it, it automatically boots straight into her account, requiring me to sign out and then sign in with my account. This wasn't a problem with Windows 7 (that I just upgraded from), so is there a reliable way to stop Windows 10 from doing this? It's very annoying.
Edit: for the regular home edition of Windows 10. The accepted answer for the proposed dupe is for pro and I believe (correct me if I'm wrong) that you don't have group policies on the home edition. The other answer basically amounts to forcing all users to have passwords, which I'd prefer not to do.