Based on typical TecDoc/TecAlliance software issues, a "loading data failed" error due to configuration file issues often stems from invalid file paths, missing database drivers, or incorrect database credentials in the configuration files (e.g., config.xml

1. Uninstall TecDoc via Control Panel.
2. Delete residual folders:

   Part 5: When to Contact TecAlliance Support

   If you have completed Steps 1 through 8 and still see "Loading data failed," the issue may be deeper:

   4.2 Remap Network Drives (Offline / Network installations)

   Many workshops install TecDoc on a server and map a drive letter (e.g., T: for TecDoc). If the drive letter changes, TecDoc cannot find the data.

   Understanding the TecDoc Architecture