The logs is the first place to start, both on Confluence & Crowd. I'd also recommend increasing the logging level on Crowd to get some more information out.
If you are sure your password is right, the most common error is not having the Confluence IP address as an allowable address in Crowd
Hi Community! I’m Elaine, Confluence Product Manager. You may have read my earlier post about page tree in space navigation sidebar. I'm excited to share another improvement that helps you organize ...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs