How to open the combination key to unlock the screen function under Win10 system?

Under normal circumstances, click the mouse or press the keyboard to unlock the Win10 screen, but this unlock is easy to leave a security risk, the hacker may remotely unlock the lock screen, and then crack the system password. At this time, you can set the key combination unlock function to ensure the security of the system. How to open the combination key to unlock the screen function?

Specific methods are as follows:

1, after the search field Cortana type regedit, and press Enter to enter the registry editor.

2, navigate to

HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon

3, find DisableCad (if not, create a new DWORD value, and use this Name), double-click to open, change "Value data" to 0, click “ OK & rdquo;.

4. Press Win+R to open “Run”, enter control userpasswords2 and click “OK”.

5. Click on the “Advanced” tab in the “User Account" check the box below to ask the user to press Ctrl+Alt+Delete", and click “OK”.

After Win10 enters the lock screen, the normal button can't unlock the screen. You can only prevent Win10 from being remotely controlled by manually typing Ctrl+Alt+Del on the keyboard to unlock the screen.