This question is in reference to Atlassian Documentation: Login problems
We have an existing Jira/Confluence/SSO Deployment. However, all of a sudden, all of our users can't login to Jira. They are able to continue logging into the Confluence and SSO. May i know where do i start checking?
There are logs in <JIRA home>/log - depending on how your SSO has been built, logging might be going to various files in there - atlassian-jira.log is the main application log, but there's also security logs in there that usually log "user X logged in" or "user Y tried but failed authentication". SSO logging could easily go into either of those.
I'd start with SSH over to the JIRA server first - you'll want to read the JIRA logs I mentioned to see why it's not letting you in.
You might want to look at SSO later if the JIRA logs say "your SSO server isn't talking to me/letting them in/etc"
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