Confluence 5.10.5 is no longer available from the Confluence download site.  This release introduced an issue that impacts customers who use Confluence with Atlassian Crowd for User Management and Single Sign On and is no longer available for download.

You can find out more about the issue here CONF-43712 - Getting issue details... STATUS .

If you have already upgraded to Confluence 5.10.5 and are affected by this issue, see the issue for a suggested workaround or Contact Support.

If you do not use Atlassian Crowd, you'll be unaffected by this issue.