Kaspersky WindowsUnlocker Removes System Blocking Malware

Martin Brinkmann
Jan 27, 2012
Updated • Apr 20, 2012
Security, Software, Windows
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You may have heard about so called ransom ware before. This is a type of malware that tries to extort money from computer users by making the system or data inaccessible until the money has been paid. This can be a serious issue, especially if you need access to the data immediately.

Kaspersky WindowsUnlocker is a free program by Russian security company Kaspersky that you can use to remove the effects of malware that is blocking you from accessing parts or all of the system.

The program ships as an ISO image that you need to burn on CD or copy to an USB device before you can make use of it. The program itself runs independently from the Windows operating system so that the malware has lesser options to block it from doing its deeds.

You can use Kaspersky's USB Rescue Disk Maker to copy the contents on a USB device, or a CD burner like ImgBurn if you prefer to burn the program to CD.

kaspersky rescue disk maker

Once copied or burned, you need to configure the target computer to boot first from CD or USB. You will see the Kaspersky Rescue Disk boot screen if that operation was successful.

kaspersky rescue disk

You are then asked to select one of the available interface languages. Available are roughly 20 different languages from English and German to Swedish and Dutch.

Select graphic mode on the next screen. You can alternatively boot the program in text mode, display hardware information, reboot or boot from the hard disk instead.

Click on the start button and select Kaspersky WindowsUnlocker from the available selection. The program runs automatically now and starts disinfecting the Registry. Results are displayed directly in the program window so that you can keep an eye on what's happening on your computer.

kaspersky windows unlocker

A log file is generated in the /var/kl or /var/tmp/ folder for each program run. Once you have finished the operation, reboot your computer, change the startup device to hard drive and boot into the Windows operating system.

If everything worked out, you should have access to your system again. And while this does not resolve all situations you may run into, it certainly can help you if ransom ware locked you out of your own computer (thanks Raymond)

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Comments

  1. Anonymous said on March 9, 2023 at 1:52 pm
    Reply

    Does it come back after every “moment” update?

  2. Baloney said on March 9, 2023 at 2:23 pm
    Reply

    Yeah right.. Like this is going to stop defender from running =) This is comedy gold right here.

  3. Anonymous said on March 9, 2023 at 3:25 pm
    Reply

    no ‘about the author’ paragraph?

  4. Gregory said on March 9, 2023 at 4:19 pm
    Reply

    For permanent disable defender is if removed complete from system no just change permission folder.

    Just this is joke.

  5. moi said on March 9, 2023 at 5:57 pm
    Reply

    simpler, load Autoruns (SysInternals)
    – filter “Defender”
    – untag all entries
    – reboot
    nothing has changed since my 1st modification years ago

  6. John G. said on March 9, 2023 at 6:32 pm
    Reply

    I wouldn’t disable Defender imho, it has too many hidden roots inside Windows itself. One time I tried to uninstall it using brute force scripts and then the Onedrive feature stopped working definitely. A reinstallation was needed and since those times I prefer to maintain Defender untouched. It’s a better method to install another antivirus and it will disable Defender in a safer and easier mode (e.g., Avast is the best in this way, and also Panda Cloud Free is good too).

    1. Tweakmaster said on September 29, 2023 at 9:57 am
      Reply

      U are just * [Editor: removed] thats the problem ;p first of all u shall always debloat windows u shall have max 65 services with your drivers for pc and windows own servs. You didnt know what that script did

  7. boris said on March 10, 2023 at 12:19 am
    Reply

    You can not stop defender from running in background or remove it without some penalty. All you can do is to limit telemetry.

    1. TelV said on March 10, 2023 at 4:52 pm
      Reply

      @borts,

      It’s probably Smartscreen which is preventing WD from being disabled. Get rid of that and the problem should be solved: https://thegeekpage.com/disable-windows-defender-smartscreen/#How_to_disable_the_Windows_Defender_SmartScreen_via_Local_Group_Policy_Editor

  8. hoho said on March 10, 2023 at 1:47 pm
    Reply

    Remove Windows and go for Linux.

    1. basingstoke said on March 10, 2023 at 2:51 pm
      Reply

      Linux sucks dude. Besides it’s not comparable to Windows, these OSes are in different classes entirely.

      1. Derp said on March 10, 2023 at 4:36 pm
        Reply

        I use Linux as my daily driver. It’s far more stable than Windows. When’s the last time you used Linux, 2010?

      2. Bromosexual said on March 11, 2023 at 2:04 am
        Reply

        @basingstoke

        You’re right, dude. Bro, linux is just a bunch of code that starts before the OS, dude. Brobrodude, that shit ain’t even got emojis, dudebrodudeman! Dudebro, it’s no way near as cool as Windows with its hardcoded abilities to make money off the user, bro. Yo brodude man, you’re the coolest dude ever man, bro. Dude.

      3. basingstoke said on August 16, 2023 at 7:20 pm
        Reply

        Lol what? Windows 7 doesn’t come with any Emojis

  9. TelV said on March 10, 2023 at 4:46 pm
    Reply

    Download Autoruns and remove the checkmark from Windows Defender. It doesn’t remove it, but it will never run. https://learn.microsoft.com/en-us/sysinternals/downloads/autoruns

  10. Simon said on March 10, 2023 at 8:37 pm
    Reply

    Just use “Defender Control”:
    https://www.sordum.org/9480/defender-control-v2-1/comment-page-1/#comments

    Per this video,
    https://www.youtube.com/watch?v=CLIjr7FyxZ8
    it also works on Windows 11 too…

  11. Someone said on March 10, 2023 at 9:26 pm
    Reply

    Win Defender, is completly the most succesful free-built in antivirus of Microsoft. Really nice product. Saved my ass a lot of times. Has updated malware database, completly strong defence
    from whatever smart screen disables. Or if you want better and more upgrated (paid) program,
    you can go further. But defender is always on your side.

  12. CalixtoWVR1 said on March 10, 2023 at 10:03 pm
    Reply

    Why would one disable Windows (or Microsoft) Defender in the first place?. I consider this to be playing with fire big time. Everybody knows that if one is using another A-V, Defender will be disabled on its own and won’t be in one’s way.

  13. Ed D said on March 10, 2023 at 11:09 pm
    Reply

    Why would I want to disable Windows Defender in the first place? It’s a great anti virus in my opinion. Been using it since Windows 8 and and never had a problem or a virus. Why mess with a good thing, if it ain’t broke don’t fix it.

  14. owl said on August 17, 2023 at 1:57 am
    Reply

    How a ridiculous article!
    I am thoroughly stunned.

    Why Should You Disable First-Party Windows Defender?
    I can only think that it is “malice or perversely intention (want you to buy a third-party AV where you can expect a back margin)” to guide invalidation without showing the premise.
    No sane company will use third-party closed source programs (such as AV).

    As I thought, “Ghacks Technology News” seems to be coming to downfall.

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