Tip: Work Management Service Application keeps telling us "Last updated at 1/1/1901 12:00 AM" fixes

This article provides a solution for the Work Management Service Application in SharePoint that displays 'Last updated at 1/1/1901 12:00 AM' and fails to show tasks. The author describes a workaround when permission configuration is restricted: delete the existing Work Management Service Application, recreate it with a new application pool using the same account as the My Sites/Social application pool, then run a crawl. This method worked across test, pre-production, and production environments. Additional resources for permission-based fixes are also referenced. The content is relevant to IT/technology, specifically SharePoint administration and troubleshooting.