Authentication is failing on multiple sites through the built-in browser in AOL Desktop Gold. We confirmed that authentication was working in another web browser (Edge) using the same credentials on the same machine on the same day (ruling out bad credentials, bad machine settings, and possible website outages). It seemed to be somewhat random, in that some sites would authenticate and some wouldn't.

We tried fully uninstalling and re-installing the app, as well as clearing footprints. Unsure if this is related to your implementation of CefSharp or how it's configured. I really can't provide any more information since the built-in browser has no debug information or dev tools.