jfc microsft! cortana. really? really???!!! people fucking hated clippy. and now you've inflicted cortana on us? shame on you. shame on us for using this piece of shit operating system from that piece of shit company. anywho. how to kill cortana. run a command prompt as administrator. c:\> cd c:\windows\systemapps c:\> takeown /F *cortana* c:\> mkdir c:\windows\SystemApps.bak. open the C:\windows\systemapps folder. cut the *cortana* file. navigate to c:\windows\systemapps.bak. paste. permissions thing shows up. ignore it. open task manager. details tab. kill cortana et al. kill searchui. go back to the permissions dialog. tell the stupid thing to move the stupid file. reboot. ***caution*** this will disable the program search feature. which is kinda useful. sigh.