Step 2: Click lock folder and then select the destination folder in the pop-up browser. To encrypt folders outside of this folder see the Security Solutions section below. Download: Price: Free compatibility: Windows XP Windows Vista Windows 7 Windows and Windows 10 For both 32 bit and 64 bit versions HiddenDIR HiddenDIR is another great tool that is not only free but also defends your privacy by hiding your private folder in just a few clicks. It is one of the best programs in this list because it provides privacy to multiple folders and also protect them from unauthorized deletion. IT provides stable protection for your data protected from other users and blocks them from viewing opening reading changing or deleting information copying or even moving folders.Step 2: Click Lock Folder and then select the target folder in the pop up browser.If you want to encrypt folders outside of this folder see the other security solutions section below.Download: Price: Free Compatibility: Windows XP Windows Vista Windows 7 Windows and Windows 10 for both 32 bit and 64 bit versions HiddenDIR HiddenDIR is another great tool which is not only free of cost but also defends your privacy by hiding your private folders in just a few clicks.It is one of the best software in this list as it provides privacy to multiple folders and also protect them from unauthorized deletion.It provides solid protection to your data that is secured from other users and blocks them to view open read change or remove info copy or even move folders.