Instructions
- In the search field on the bottom left of your screen, type sign-in options. Do not press Enter.
In the list of results that appears, click Sign-in options. - Locate the "Require sign-in" section. In the drop-down field, choose your preferred option. If you want Windows to prompt for authentication when resuming from sleep, choose When PC wakes up from sleep.
- Close the settings window.
Outcome
Windows will prompt for a password when resuming from sleep.