How To Disable Cortana in Windows 10
Many people find Cortana to be genuinely helpful for searching the web, showing notifications and setting calendar reminders, among its other specialties. But security-conscious users might be wary of what the AI assistant is learning about you, your schedule and location and sharing those tidbits with Microsoft and its other services. Prior to Windows 10's recent Anniversary Update, you could disable Cortana by toggling a single switch, but since then, Microsoft has made it nearly impossible to do.
Our friends at PCWorld figured out how to disable Cortana in Windows 10, after the Anniversary Update. Below, we'll specify a fix that puts down Cortana in both Windows 10 Pro and Home. If you turned off Cortana prior to installing the Anniversary Update, you'll need to follow these steps to disable it again. Note that this fix requires editing the registry, so be sure to backup first and proceed with great caution when attempting this fix.
Here's how to turn off Cortana in Windows 10:
1. Open regedit the registry editor, from the search box on the taskbar.
If asked, allow the program to make changes to your computer.
2. Go to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Windows Search
But wait! Windows Search might not be there. It wasn't for us, so we had to create it.
2a. Right-click the Windows folder and choose New>Key. Call it "Windows Search."
3. Right click "Windows Search" and choose New > DWORD (32-bit Value).
4. Name the DWORD "AllowCortana." Click it and make sure the value is "0."
5. Restart the computer (or log out and log back in). Cortana will be replaced with a regular search bar.
While Cortana is gone, it's still hiding. You may find the program running in the background, but you might as well leave it there. When we tried killing the program, Cortana kept popping back up like a weed. When PCWorld managed to kill the process, they couldn't search for anything on their PC.
It's possible that the next Windows update will restore Cortana to its place in Windows 10, so be sure to keep these instructions handy, just in case.