How to Disable Cortana Permanently Using the Windows Registry

  1. Right-click the Windows icon and select Run to open the command prompt.
  2. Type regedit and press Enter.
  3. Navigate to HKEY_Local_Machine > SOFTWARE > Policies > Microsoft > Windows, then right-click the Windows directory and select New > Key.
  4. Name the new folder Windows Search.
  5. Right-click the Windows Search folder and select New > DWORD (32-bit) Value.
  6. Name the new file AllowCortana.
  7. Double-click the AllowCortana file to open it, set the value to 0, then select OK.
  8. Close the Registry Editor and restart your computer.