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Cracklock is a unique tool designed to protect you from a particularly vicious polymorphic virus affecting an ever-growing number of shareware programs. This virus, known as the "30th day virus", typically manifests itself 30 days after the installation of your infected software and basically prevents it from starting up! Often a warning message accompanies this suspicious behaviour. Cracklock cures your programs using cutting-edge technology that are still unknown to other anti-virus vendors (McAfee, Norton, Sophos, Thunderbyte, F-Proot...).

Cracklock Screenshot

Cracklock can be used for other purposes as well, for instance developers have used it to certify their software for "Year 2000" compliance. Since then we've improved Cracklock and are now proud to announce that it can also certify your software against the Y10K bug (aka "bug of the year 10000"). Thanks to Cracklock those bugs have all become a problem of the past.

Lastly Cracklock offers a new feature to work around the "Microsoft Outlook timezone bug"!

  • Download Cracklock Latest version  (1.27MB)

Frequently Asked Questions

A Cracklock FAQ is available here.

Google Groups

For discussions about Cracklock, visit the Cracklock group.

You can also subscribe to the group by entering your email:

What's new

See the change log to see the list of recent changes. The following features were introduced since version 3.9:

  • Cracklock can now be run from a flashdisk
  • It is possible to choose whether to store informations in the Windows Registry or in an INI file.
  • Cracklock still (partial translation) of the following languages: french, english, spanish, arabic, serbo croatian, hungarian, korean, german, simplified chinese and portuguese.

Help Documentation

The english documentation is available here. For other languages an older version of the documentation is available:

Contributing to the translation

The translation tool I once developped (RLGui) is now deprecated. Although it had nice features (for instance it can automatically reuse strings translated for version n of a program to generate translation for version n+1), it required me to do some postprocessing after each translator had finished his job. From now on, if you want to make a new translation of Cracklock, use any resource editor available on the net (Resource Hacker, Resource Explorer or Microsoft Visual Studio) and edit one of the file in the 'Language' subdirectory of Cracklock (e.g. CLRESUS.DLL for the english version) then save it under another name (e.g. CLRESGE.DLL for german) in the same directory. After restarting Cracklock Manager, the newly created language will appear under the Language menu.

Download previous versions Previous versions

Previous versions of Cracklock

Download previous versions Previous versions

Previous versions of Cracklock
Cracklock.3.9.44.exe16 March 20081 MBCracklock 3.9.44
Cracklock.3.9.42.exe11 March 20081 MBCracklock 3.9.42
Cracklock.3.9.37.exe09 March 20081 MBCracklock 3.9.37
Cracklock.3.8.27.exe01 December 2007822 kBCracklock 3.8.27
Cracklock.3.8.26.exe16 September 2007822 kBCracklock 3.8.26
Cracklock.3.8.20.exe11 September 2007822 kBCracklock 3.8.20
Cracklock.3.8.13.exe8 August 2007803 kBCracklock 3.8.13
cklk389.exe2 August 2007776 kBCracklock 3.8.9
cklk388.exe7 November 2005740 kBCracklock 3.8.8
cklk387.zip16 September 2005723 kBCracklock 3.8.7
cklk386.zip18 July 2005723 kBCracklock 3.8.6
cklk385.zip8 May 2005690 kBCracklock 3.8.5
cklk384.zip2 August 2001627 kBCracklock 3.8.4
cklk383.zip11 June 2001357 kB Cracklock 3.8.3 Use this version if you are running Windows 95 without the Unicode service pack.
cklk382b.zip20 January 2001missing Cracklock 3.8.2 beta
cklk381.zip17 September 1999missingCracklock 3.8.1
5 August 1999157 kBCracklock 3.7.1
ck36sp.zip9 April 1999124 kBSpanish resources for Cracklock 3.6
ck36us.zip10 April 1999123 kBEnglish resources for Cracklock 3.6
3 January 1999159 kBCracklock 3.6
25 December 199859 kBCracklock 3.5
9 August 199831 kBCracklock 3.0
cklk23.zip18 June 199889 kBCracklock 2.3
cklock11.zip11 June 199849 kBCracklock 1.1