question: How to find out which version of Windows you’re using
answer: 
  What can a VPN do?
  Show Me
  
  This guide will show you how to find which version of Windows you are using. To use the ExpressVPN Windows app, you will need Windows 7 or above.
  
  If you are using Windows Vista or XP, update Windows to download the latest version of the ExpressVPN app. This will keep the app updated with the latest security and privacy enhancements. If you cannot use Windows 7 or above, use the OpenVPN manual configuration.
  
  Find out if you are using…
  
  Windows 11
  Windows 10