Symptoms

Spaces are visible from the dashboard, but are not listed in the Space Directory. This has been known to happen after upgrading.

Cause

The content index and/or ancestor table are out-of-sync with the data in Confluence.

Resolution

1. Rebuild the Content Index from scratch following the directions at How to Rebuild the Content Indexes From Scratch on Confluence Server

2. Rebuild the Ancestor Table from scratch following the directions at Rebuilding the Ancestor Table