Use PenyuLocker To Lock Or Encrypt A Windows Folder

Karl L. Gechlik 21-05-2010

<firstimage=”//” />freeware to encrypt foldersI previously covered an application that allowed you to hide a drive letter from users on your Windows system Hide Your Drives From Prying Eyes with No Drives Manager [Windows] Read More . Today we will be looking at a small application that will allow you to not only encrypt certain folders on your Windows system but it will also change the icon of the folder or folders you encrypt to a recycle bin.


Once encrypted you will need to reopen the application and enter your password to unlock the folder so that you will be able to read it again.Let’s check out how it works.

First you will need to download the freeware to encrypt folders, which you can do from here [No Longer Available]. The installer is 854KB and uses practically no memory when in use.

You will need to extract the three files in the zipped folder. Then you will run PenyuLockerInstaller.exe. That will bring you to the installer screen that looks like this:

freeware to encrypt folders

Click on the start installation button and Penyulocker will start to install. Once installed, you can now open the application from your start menu. When you start the application you will see a simple interface that will allow you to lock or unlock folders at will.


freeware to encrypt folders

Simply navigate to the folder you want to lock and click the big lock button at the bottom.  I drilled down into my C:\ drive and chose a folder as you can see below:

free encrypt or hide folders or files

Then after clicking on the lock button, I am prompted for a password like so:


free encrypt or hide folders or files

Type in a password that you will remember. The harder the password the better the encryption – but, if you forget your password, you are screwed!

This is the folder I decided to encrypt:

free encrypt or hide folders or files


So now let’s see what we have accomplished. By browsing on over to my C:\ drive I can see that the flash folder has been turned into a recycle bin and my files cannot be opened.

how to encrypt lock file or folder

You will see the file names that are in your real recycle bin but that is it. Go ahead and try to open the folder. You will see the files listed as if they are in the recycle bin – emptying them, restoring them or doing anything to them will not affect your files.

So when I attempt to open that folder this is what I see:


how to encrypt lock file or folder

I emptied the recycle bin and then the folder was empty. Now I will try to restore access to the folder by going back into the application and double clicking on the folder like so:


Then click on Unlock and enter your password:

how to encrypt lock file or folder

Sometimes the application comes back and tells you to double click on the folder, but it is already unlocked. By navigating to the folder from Windows we will see that it is back to normal and all the files are accessible again. You can lock multiple folders at the same time regardless of contents.

Do you have another tool that does this easily? What kinds of data are you encrypting? We would love to hear about it in the comments.

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  1. Robust Mind
    June 8, 2010 at 8:39 am

    its a good software!

  2. HRK
    May 22, 2010 at 9:28 am

    What a childish attempt to make folder locker, any one can easily open this folder by just renaming it from command prompt.....grow up man.....

    • Lucy
      June 1, 2010 at 6:24 am

      please let me know how do I do that. in my attempt of doing something good I have blocked a folder, now is not recongnizing the password.... please give me a clue, i do not know anything about this...

    • fury
      June 8, 2010 at 3:56 am

      I believe you don't know what you are talking about.

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