Cannot start the Windows Phone emulator with the message "The emulator is unable to create the internal network switch"

On a Windows 10 Pro notebook, I encountered this error while trying to run the Windows phone emulator from Visual Studio 2015.

A few quick Internet search results came up with the following suggestions:

1. Use the Hyper-V Manager to manually create the "Windows Phone Emulator Internal Switch" but I found this did not fully resolve the problem, as running the emulator will create additional network switches.
   
   
2. Uninstall Oracle Virtual Box. However, I required Virtual Box for other purposes. 

The solution that work for me was to do the following:

1. In Windows, search for "View network connections" to bring up the Network Connections panel.
   
   
   
2. Look for all VirtualBox Host-Only Ethernet Adapter connections e.g. Ethernet 3. Mouse right click on each connection.
   
3. In the pop up menu, choose Disable. 

It may be necessary to restart Windows. Now the Windows Phone emulator should be able to start up.