Remove "Lock Computer" from CTRL+ALT+DEL in Group Policy
From the Run Command type gpedit.msc
In the left pane, click/tap on to expand User Configuration, Administrative Templates, System, and Ctrl+Alt+Del Options. (See screenshot left)
In the right pane of Ctrl+Alt+Del Options, double click/tap on Remove Lock Computer to edit it
Select Enable
In the left pane, click/tap on to expand User Configuration, Administrative Templates, System, and Ctrl+Alt+Del Options. (See screenshot left)
In the right pane of Ctrl+Alt+Del Options, double click/tap on Remove Lock Computer to edit it
Select Enable