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In setting up a point-to-site vpn connection from my windows 8.1 client to my Azure Virtual Network, I followed the steps on this instructional. I'm pretty clued up with certificates and networking and everything worked fine until I got the following error when trying to connect to the VPN.
A certificate could not be found that can be used with this Extensible Authentication Protocol. (Error 798)
No matter what I tried, I couldn't find a way to select the client certificate to use either via pre-configuration or at connection time.
I have tried to re-install the azure vpn client executable and re-import the certificates without any luck. I've also tried to modify the VPN configuration through the 'View Network connections' utility and the metro 'Network' section of 'change PC settings' (accessed via the right slide in menu). However nothing seems to offer the option of selecting the client authentication certificate.
I've also confirmed that the client and server certificate's meet the requirements specified on this site.
Any help would be greatly appreciated.