A shared folder on your computer allows other people on your network to access common files. If you want to restrict others from accessing the shared folder, you can put a password on the folder to prevent people from accessing the folder contents. Putting a password on your shared folder isn't a difficult task and it can be done in a matter of minutes.
Navigate to the folder on your computer's shared drive that you want to password-protect.
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Right-click on the folder. A small gray menu then appears.
Scroll to the bottom of the menu to the "Properties" tab.
Double-click on the "Properties" tab.
Navigate to the "Sharing" tab at the far right and click on it.
Navigate to the bottom of the "Sharing" tab and check the "Make this folder private" box.
Click on the "Apply" button at the bottom of the display.
Click "OK" at the bottom of the display. The folder is then set to the administrator's password.
The procedure works for all versions of Windows XP, Windows Vista and Windows 7.