Renamed files, folders, network drive letter, or UNC path changes can all create broken links to your back end databases. The typical resolution is to remove the linked table references in each front end database and re-link each one to the back end database. Repairing linked tables is a pain, that's why UI Builder - Enterprise Edition now features an automatic linked table check when your database loads. If any links are broken, the user is prompted to locate the back end database. UI Builder does the rest...repairing each broken link and allowing users to continue working in seconds.