The Active Directory instance which our Octopus is integrated to for authentication recently was updated to change all usernames from lowercase to all-caps. After this change, some users were unable to log in with either a generic 500 error or a “This username has already been taken by someone else. Please use a different username.” message.
Reports from users didn’t indicate any other information in the browser console related to the 500 when encountered. There were no corresponding messages in the OctopusServer.log
Octopus server version 2020.1.10
Same behavior was confirmed in different browsers for affected users (Chrome, Firefox); the issue seems to come up specifically to individual users, although we haven’t been able to isolate which users would be affected.
Any thoughts as to why changing Active Directory usernames from lowercase to all-caps would cause some users to no longer be able to log in?