question: Windows installer errors
answer: 
  When installing the ExpressVPN app on your Windows computer, you may encounter errors when running the Windows app installer.
  
  What error are you seeing?
  
  Error 0x80070005
  Error 0x8007015E
  Error 0x80070490
  Error 0x80070643
  Error 0x80070652
  Further troubleshooting steps
  