wa ko kasabot ani dah...
"Note that in order to unlock the folder this way, you need to double-click on the folder in the right-hand panel of the Windows Explorer window. If you select the folder in the left-hand panel that shows the folder tree, the password prompt will not be shown and the Access denied message will be shown instead."
dire ni gikan
Password protect folders, lock files and folders with passwords | WinAbility Software
thanks daan