I have Windows 8.1 and the updated Mail application on a Surface Pro.
No matter what method I try, or account I try to add, I cannot get the mail client to ask for use of a certificate for EAS auth. It consistently asks for username and password and then just notes that I "Unable to Connect"
I have a certificate in my user store. I've verified that and that I have the private key. I have other applications which work with that certificate.
I have confirmed that the EAS server address will prompt for the cert if I enter via the browser so it can see and communicate with the server but the mail app just refuses to prompt.
Any ideas?
David.