https://community.appian.com/discussions/f/administration/9178/appian-16-3-hotfix-b-and-c---login-failed-after-updateI recently tried installing Hotfix C on an Appian 16.3 instance that had Hotfix A installed and working. After installing Hotfix C I wasn&#39;t able to log in. I had other members of the team try to log in and they were also unable to. I reverted the serveren-USTelligent Community 12https://community.appian.com/thread/41103?ContentTypeID=1Fri, 06 Jan 2017 04:39:39 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:997164c2-ed2b-406a-8807-b4415ef590deTom RyanPer the above mentioned thread, it seems the issue is now resolved. If you are still seeing issues, feel free to create a Support case to work on this.<div style="clear:both;"></div>