The file name varies by implementation but is often:
Check for syntax errors, such as missing tags or incorrect element declarations.
Look for a logs folder within your TecDoc directory. Search for "Tec-160" or "Tec-201" error codes, which indicate unspecified processing errors or authentication failures.
How to Fix "Loading Data Failed: Check the Configuration File" in TecDoc
or possibly:
The configuration file points to a data source. If the source is unreachable, loading fails.