Appendix: Consolidating the Logs in the Cloud Using OpenVPN : Configuring On-premises Servers : Install OpenVPN
  
Install OpenVPN
Download the OpenVPN installer .exe file for Windows from the site at openvpn.net/community-downloads. Run the installer .exe file and follow the steps in the Setup wizard that appears:
Keep the default selection of the components to install, which does not install EasyRSA 2 Certificate Management Scripts. This component is not used on the client computers.
Accept the default installation folder, %ProgramFiles%\OpenVPN. This folder will also store the configuration of the OpenVPN client.
When prompted, agree to install the TAP device software. This virtual network device provides connection and data exchange between the OpenVPN client and server.
OpenVPN requires Microsoft .NET Framework 4.0 or later. If prompted by the Setup wizard, install the latest version of the .NET Framework. For installation instructions, see Microsoft’s article at docs.microsoft.com/dotnet/framework/install.
Once you have completed the Setup wizard, you can move on to configure the client.