Extract OpenVPN driver code signing certificate

To extract the OpenVPN driver code signing certificate, download OpenVPN from here: https://openvpn.net/index.php/download/community-downloads.html (this article was created using version 2.3.10)

On a test machine, install as administrator.





Click Next



Click I Agree



Ensure that only TAP Virtual Ethernet Adapter is selected and click Next



Click Install



On the windows security dialog, tick Always trust software from “OpenVPN Technologies, Inc.”.
and click Install.








Once installed, click Next



Click Finish





Open the MMC



Click File and select Add/Remove Snap-in…



Select Certificates and click Add.



Select Computer Account and click Next



Select Local comptuer: (the computer this console is running on) and click Finish



Click OK



Expand Certificates (Local Computer) –> Trusted Publishers –> Certificates.

Right click the OpenVPN Technologies certificate and select All Tasks –> Export…



Click Next



Select Base64 encoded x.509 (.CER) and click Next



Click Browse, navigate to the location you wish to save the certificate and click Next



Click Finish



Click OK



The certificate is now in the location specified.