Microsoft’s voice assistant is now offered as a standalone app on Windows 10 but cannot be uninstalled. At least officially …
But for those users who prefer to get rid of the voice assistant, Microsoft offers no solution. There is indeed no official, or at least easily accessible, way to uninstall Cortana.
Unless you roll up your sleeves a bit by launching a specific command in PowerShell.
1. Open PowerShell in administrator mode
Start by opening PowerShell in administrator mode on your machine.
To do this, simply search for PowerShell in the search box at the bottom of the screen (or by typing the first few letters directly from the Start menu), right-click on the app, and choose to open it As. administrator.
2. Enter the command
Once the PowerShell window is open on your machine, copy and paste the following command, and validate by pressing the Enter key on your keyboard.
Get-appxpackage -allusers * Microsoft.549981C3F5F10 * | Remove-AppxPackage
Applying this command will uninstall Cortana for all users.
However, if you change your mind, you can always go to the Windows Store to download Cortana to reinstall it on your machine.