I forgot my Content Lock password - how do I reset the Content Lock on my computer?
Some countries require content lock to be engaged: for example, Germany. If you live in a country where low violence settings are required, removing the content lock is illegal.
To reset the content lock to off and remove the password, execute the attached reg file.
Some server admins may force "content lock" on client machines connecting to their server. German servers may be required to do this.
Exit from Steam, and open the "Start" menu in Windows.
Select "Run", type "regedit" and click "OK".
Navigate to the following registry key: HKEY_CURRENT_USER\Software\Valve\Half-Life\Settings\
Right click the registry values "User Token 2" and "User Token 3" , choose "Delete", and then exit the registry.