The lock screen feature in Windows operating systems can be activated via a multiple-key command or after the computer has been idle for a specified time. The Group Policy Editor utility allows you to disable this feature with a simple change in configuration. The specific snap-in value that corresponds to this feature will vary depending on the Windows version you use. The process is quick and straightforward.
Log into the system with an account that has administrative privileges.
Click the "Start" menu, type "gpedit.msc" in the Search text field and press "Enter."
Expand the "User Configuration" folder on the left pane. Expand "Administrative Templates," "Control Panel" and click the "Personalization" folder.
Double-click the "Password protect the screen saver" setting. A Properties window will open.
Choose the "Disabled" option, click "Apply" and click "OK." The lock screen feature will be disabled. Close the Group Policy Editor.
Log into the system as an administrator.
Click the "Start" menu, type "gpedit.msc" in the Search text field and press "Enter" if using Windows Vista.
Click "Start," select "Run," type "gpedit.msc" in the dialogue box and click "OK" if using Windows XP.
Expand "User Configuration," select "Administrative Templates," choose "System" and click the "Ctrl," "Alt" and "Delete" options folder.
Double-click the "Remove Lock Computer" setting on the right pane. A Properties window will open. Choose "Enabled," click "Apply" and click "OK." This disables the lock screen feature.
Close the Group Policy Editor utility.