Lock Folder Access without any third party software

How to lock folders in windows without using any third party software?

Step1: Open the properties page of the folder you want to lock.

Step2: Select the Security tab at the top and click on Edit. If asked then give your administrator password.

Step3: Change the check boxes of 'Read' and 'Write' to Deny from Allow.

Step4: Click on yes if a dialog occurs.

Step5: Click OK twice, and you got a locked folder.

To open the folder change it's properties back to 'Allow'