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.

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