It means that no program will run except my program beside this task bar, desktop windows key of keyboard, Alt + tab, and Alt + ctrl + del will also not perform.
At first you will go to the control panel, then you will set up you password then you will give your username. after seeting this you can lock your desktop.
Hi, Bipon770, if Ctrl + Alt + Del doesn't work, it means your question here is a bit tricky to solve but I'm going to show you how to solve it by using these few steps;
Press the Windows button + L while on active desktop
On the desktop window, right-click and select properties
On the Display properties, click on the Screen saver tab
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Click on the box to select the time you want the computer to lock itself.
Check the box labeled On resume, password protect.
Click Ok
Your computer will now lock itself after the specified period.
When your computer is locked, you can unlock by pressing Ctrl + Alt + Del in the same time and entering the password to unlock. Hope this solves
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