If you've just updated your laptop to Windows 10, you may have noticed that your laptop now doesn't ask you to sign in after you wake it up by lifting the screen. Your power settings in the Control Panel may indicate that they are still set to put the computer to sleep after you close the lid, but the login screen doesn't appear. This is because Windows 10 is set to never ask you to sign in if you've been away for a while, which includes the period after a laptop wakes up from sleep.
To remedy this, you have to visit the Windows 10 sign-in settings. These can be accessed from the Notifications tray near the clock on your Taskbar.
The Notifications icon is the one in between the speaker and keyboard icons in this screen shot.
Click on All Settings, then on Accounts.
Next, go to the Sign-in options area and Change the 'Require sign-in' field from 'Never' to 'When PC wakes up from sleep'.
That's all there is to it. Now, after you wake up your laptop by lifting its lid, you'll always be asked to sign in. This can give you a little peace of mind, especially when you travel and want to quickly close and open your laptop to get some work done. If you ever forget your laptop or it gets stolen, no one will be able to lift the lid and access your computer straight away.
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