Facebook's authentication changes have now finally stopped the old (2014?) official client for Windows Phone 8.1 from being able to log in, as anyone with an older Lumia should be able to verify. With the platform itself now not supported by Microsoft, such major service/client failures are not surprising. What is surprising is that finding alternative means of logging into Facebook are also not easy. Though, as ever, I do have a solution for AAWP readers still clinging to Windows Phone 8.1!