Activesync one Windows phone 7.8 with client certificate.

Hi

We've setup Exchange mobility using Citrix netscaler with client certficate validation.

But I cannot get my Windows phone 7.8 to sync with exchange.

I've downloaded the private key certificate onto my phone, yet I keep getting an 80072EFF error.

I've read somewhere that Windows Phone can't handle 2-factor authentication, with the above kind of setup.

Android and Iphones have no problem syncing.