Cannot Login After Upgrade Due to Using JIRA for User Management
Users can't log in to the instance after upgrading.
Step 6 of Delegate user management to use JIRA logins was skipped. The upgrade guide describes moving
<confluence-home>/confluence/WEB-INF/classes/atlassian-user.xml from the old instance into the new.
atlassian-user.xml to point to the osuser repository:
... <osuser key="osuserRepository" name="OSUser Repository"/> ...