My OS is Windows 7 Build 7601 Ultimate 64 bit with 4GB RAM and all MS updates up until 24-01-2014 when everything cam crashing down to earth. I updated my MS Windows Defender Definitions with KB915597 on 24/01/2014 and on the same day (cannot remember time frame exactly) within hours I got the "You windows maybe a pirated copy blah! blah!" message, whatever happened also deleted all my System Restore points at the same time. I have run Malwarebytes (not in safe mode) - Combofix in Safe Mode and nothing was found I ran the WAT Fix and then uninstalled my current WL by DAZ and re-installed it with v2.2.1 but I cannot get rid of this "Windows 7 Build 7601 - This copy of Windows is not genuine". WL by DAZ it has patched the file/s but upon reboot into normal mode the nag window of pirated version reappears and asks you to Activate Windows. Has MS found a way to nullify DAZ's loader by including a "killer" file in the Widows Defender Updates?