Crowd SSO users cannot login to Confluence server after upgrading to 5.10.5

Summary

Crowd SSO users cannot login to Confluence server after upgrading to 5.10.5

after upgrading to 5.10.5, all Crowd using SSO user cannot login to Confluence.

Error message in atlassian-confluence.log:

login login : '<username>' tried to login but they do not have USE permission or weren't found. Deleting remember me cookie. 

Environment

• Confluence 5.10.5 + Crowd and SSO enabled

Steps to Reproduce

1. Install Confluence 5.10.5
2. Enable SSO settings in Confluence and Crowd
   edit seraph-config.xml
   refer https://confluence.atlassian.com/crowd/integrating-crowd-with-atlassian-confluence-198573.html
3. restart Confluence

Expected Results

Crowd users can log in.

Actual Results

Crowd users cannot log in.

Notes

Workaround

1) Login Crowd once, before logging in Confluence.
2) Disabling SSO allows the login by disabling the Confluence "Crowd SSO Authenticator" and re-enabling the default Confluence authenticator:

1. Shut down Confluence if it is currently running
2. Edit the file CONFLUENCE/confluence/WEB-INF/classes/seraph-config.xml
3. Uncomment the default Confluence authenticator:

   <authenticator class="com.atlassian.confluence.user.ConfluenceAuthenticator"/>
   

1. Comment out the Crowd SSO Authenticator:

   <!-- <authenticator class="com.atlassian.confluence.user.ConfluenceCrowdSSOAuthenticator"/> -->
   

1. Restart Confluence

Note that this workaround is to allow users to log in to Confluence, however, SSO will not work with Confluence