Lock files and folder without any app

There is always a necessity to lock the files and folders so that any other users cannot access them. You can hide those files and folders or make them unaccessible to other users using various softwares like PC Security, folder locker etc. But here i am going to show some of the steps from which you can make the files and folders unaccessible to other. Ok lets start:

Go to folder of file you want to lock. Right click in it and go to properties. Go to security Tab. In security tab Go to Edit tab. In security window select Group or username. Click on deny checkbox. Click apply and click Ok.

Now you can't open, rename and delete this file or folder directly. You can enable them all using the same way and just checking the all tab instead of deny tab. For those who don't know these tricks can't access these files and hence making them protected.
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