Confluence Data Center integrated with OKTA via SAML SSO 2.0 redirects to 'Page Not Found'
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Problem
When attempting to login to Confluence, or sometimes even when already logged in for a while, you receive a Page Not Found.
The URL in the browser's address bar looks like this: https://confluence.mycompany.com/okta_acs.jsp
Diagnosis
Environment
OKTA integration is configured in Confluence using OKTA's provided .jar file and config files
This issue is NOT reproducible when using Confluence Data Center's native SAML configuration (a.k.a as SSO for Atlassian Server and Data Center plugin)
- The login authentication works after browsing to another Confluence page.
Cause
There is a file called okta_acs.jsp that manages the integration part between Confluence and Okta. The problem occurs when this file is not located in the appropriate folder.
Resolution
Reach out to Okta support team to confirm where the file should be placed. Usually, the correct location is under the $CONFLUENCE_INSTALL_HOME/confluence folder (within Confluence Installation Directory)
<confluence-install>/confluence/okta_acs.jspAs an alternative, you can follow these steps to integrate Confluence with Okta using Atlassian SSO plugin: