question: Unable to connect: No TAP-Windows/TAP-Win32 adapters on this system
answer: 
  If you see the following error message in your connection log:
  
  Thu Apr 21 14:17:46 2016 There are no TAP-Windows adapters on this system. You should be able to create a TAP-Windows adapter by going to Start -> All Programs -> TAP-Windows -> Utilities -> Add a new TAP-Windows virtual ethernet adapter.
  Thu Apr 21 14:17:46 2016 Existing due to fatal error
  Disconnected with error: vpn process terminated unexpectedly
  or
  
  Thu Apr 21 14:17:46 2016 There are no TAP-Win32 adapters installed on this system.
  
  Resolve this issue by updating to the latest ExpressVPN Windows app, which has the latest ExpressVPN TAP driver.
  