Disable Cortana (C#)

// SetDisableCortana.cs
//
// Disable Cortana.
// Disables Cortana integration in Windows Search (requires admin). Requires an elevated (Administrator) prompt.
//
// Usage: dotnet new console -o SetDisableCortana, replace Program.cs with this
// file, then dotnet run.

using System;
using Microsoft.Win32;

using RegistryKey key = Registry.LocalMachine.CreateSubKey(@"SOFTWARE\Policies\Microsoft\Windows\Windows Search");
key.SetValue("AllowCortana", 0, RegistryValueKind.DWord);

Console.WriteLine("Disable Cortana applied.");