I was preparing to write up the solution in this article but was unable to forcefully uninstall it!
I tried all of the ideas I could think of and suggestions scattered about the Internet about this piece of software. The request to remove it genuinely was from a user. The K9 web filter was installed on an old system and the user had forgotten the password which led them to not being able to use it for browsing the Internet.
I tried forcefully uninstalling the application with a tool called Portable Uninstall Tool which can be found on another blog called FC Portables. I used the uninstall tool to forcefully remove the K9 web filter and also scan for and remove all registry entries relating to the web filter. After that I tried more methods.
- Ran CCleaner on the system removing all of the files found and thorughly cleaned the registry. Don’t forget to backup the registry when it asks if you are also trying this.
- Manually searched through the registry deleting all registry keys referencing K9 Webfilter or BlueCoat.