Since the release of Winter 20, I have a group of users that are not able to access X-author for Excel. The error is "Can't access this page: We don't support this browser. Try opening this page in a supported browser." Our standard is Chrome, and it is the default browser set for those computers. 

Has anyone else run into this issue? It is only happening for users in the UK and it all worked fine until Winter 20 release.