Can't unlock the folders that I locked with 'Folder Lock' program

I use Folder Lock Version 5.2.6

Problem : It asks for new password each time I open it.

Bigger Problem : I had locked many folders with this software when it was working fine.
But now I can't access those folders anymore, they're still locked but software doesn't show these folders in its "locked folders list".
How do I unlock them?
The software was working fine for few months - I was able to lock and unlock things in my computer during that period. But all of a sudden the software Folder Lock just got reset somehow.

Things I've Tried :

• Locking the locked folder again, but the software Folder Lock turns up and asks for new password over and again.

• Looking in the security tab of the properties of the locked folder, but what I see is: The security information you requested is either unavailable or can't be displayed.

OS : Windows 8 Pro

Solution 1:

Check if this helps:

• To remove password

  1. First close Folder lock and show hidden file and System hidden file
  2. Select the Tools menu and click Folder Options
  3. Select the View Tab

Under the Hidden files and folders heading select "Show hidden files and folders"

Uncheck the "Hide protected operating system files (recommended)" option

Click Apply then OK

Delete "win_mpwd_sys.dat" From

C:\ProgramData
C:\Users\Vortex\AppData\Local 
C:\Windows\ (in Windows x86) 
C:\Windows\SysWOW64\ (in Windows x64) 

Run Folder Lock and enter new Password

Here is a link you may want to read, it is the FAQ's for Folder Lock.

Solution 2:

I had the same problem. I was not able to retrieve my locked files but uninstall of folder lock without password is easily done by using for example speed commander (select folder lock from program files via speed commander and delete) Simple as that.(no password required) Can also be done with other file finding software as well.