If you have Windows 10 Pro, you can disable Cortana with the Group Policy Editor. Like this:
Press WindowsKey + R to get the run box
Enter the program gpedit.msc
Browse to: Computer Configuration/Administrative Templates/Windows Components/Search
Find "Allow Cortana"
Doubleclick and disable.
DONE - D U N, DUN!
Press WindowsKey + R to get the run box
Enter the program gpedit.msc
Browse to: Computer Configuration/Administrative Templates/Windows Components/Search
Find "Allow Cortana"
Doubleclick and disable.
DONE - D U N, DUN!