ou need to do the following.

  1. Open the Control Panel.

  2. Navigate to Control Panel\System and Security\Action Center. In the left pane, you will see the "Change Windows SmartScreen settings" link. Click it.

    Windows 10 action center

  3. The following window will appear on the screen

    Windows 10 disable smartscreen filter

  4. Set the option "Don't do anything (turn off Windows SmartScreen)" as shown in red above and click OK.

That's it. Windows SmartScreen is turned off now.