Windows 10 Update Re-Enabled Cortana

So one of my computers is a self-built PC dual booting Linux Mint and Windows 10. Windows 10 installed updates even though I have auto-updates disabled.

I come home after work today and the search bar to the right of the start menu had changed to "I'm Cortana! I'm your new personal assistant!"

I disabled Cortana months ago...I had to go back into the settings and disable Cortana just now.

If it weren't for PC Games I would have gotten rid of Windows a long time ago. I know about the updating-without-permission issue but has anyone else had this thing with Cortana happen to them?