I'm having a strange issue with IE11 where the client is prompted multiple times in immediate succession to choose a client certificate. The web page has multiple IFrames with content from different web apps (some performing AJAX requests) on the same server. (Though the requests are reverse proxied on the back end, it is the proxy that performs the client-certificate demand.) If the user acknowledges all of the cert dialogs the requests will eventually succeed. This doesn't happen with Firefox. It also seems to only happen on Win7, not Win10. Axway Desktop Validator is used for certificate validation. I'm wondering what would make IE11 re-prompt for a client certificate after it already selected a certificate for the same server. I am also looking for more detailed information about how products like Axway DV interface with IE11 to perform certificate validation. It sounds like it has something to do with CAPI, but that's all I can find so far. Is there https traffic between IE and Axway? Any help would be greatly appreciated.
Tom