This is the most common cause. The configuration file (often tecdoc.ini or similar) must match the actual folder location of your data.

The software tells you to "check the configuration file." You need to find it first. Look for these file names in the main TecDoc installation folder:

During installation, the software needs "Read & Write" access to its own directories to initialize the data.

[DATABASE] Path= (empty!) Type=(gibberish symbols)

Look for entries defining:

If you are running a local network or server version of TecDoc, it requires an active database engine (frequently Transbase or MS SQL). Press Windows Key + R , type services.msc , and press .

Avoid installing deep within folders. Use a direct path like C:\TecDoc . Summary Checklist Run as Admin Fix Permission issues Check config.ini Correct database paths Re-register Data Link database to App Check Antivirus Ensure no blockage Reinstall Fix corrupted files Final Option: Technical Support

Then your issue is almost certainly related to incorrect file paths or a corrupted installation. Double-check your configfile.xml settings and consider a clean reinstallation as described above.