1. Click 'Start' and type 'Services.Msc.' Press 'Enter' on your keyboard to launch the Services applet. Alternatively, click 'Start,' then launch the 'Control Panel.' Click the 'Administrative Tools' applet and launch the 'Services' entry listed.
2. Browse for the 'Network DDE Service' as well as the 'Network DDE DSDM Service.' Double-click each item to launch its properties menu.

3. Click 'Start' under the 'Service Status' field to initialize the service in question. If either Network DDE service was entirely disabled, click the 'Startup Type' menu and select 'Automatic' or 'Manual.' The 'Automatic' option ensures the service is active at all times, while the latter option only functions as any given program may need it.
4. Click 'OK' for all settings to take place. Exit the Services applet by clicking the 'File' menu, followed by 'Exit.'