In this video, I will be demonstrating how to bypass Windows authentication with Kon-Boot. Kon-Boot (aka kon boot, konboot) is a tool that allows accessing the target computer without knowing the user's password. Unlike other solutions Kon-Boot does not reset or modify the user's password and all changes are reverted back to the previous state after the system restarts. It has been on the market since 2009 and the free version was downloaded more than 5 000 000 times.