Whether this is a or a network/server installation
Copy these files to your desktop as a backup, then delete them from the AppData folder.
: If you see a specific code like Tec-114 or Tec-115 , these often indicate XML structure issues or unspecified database retrieval failures.
Older versions of TecDoc use system date checks to enforce validity periods.
For a workshop or IT administrator facing this error: Whether this is a or a network/server installation
If your operating system is Windows 11, you may need to look for different updates. Some users on Windows 11 23H2 have reported that KB5011048 may not be present, but updates like could be causing similar issues. If the error persists after removing KB5011048, review your installed updates for any other recent updates that might coincide with when the problem began.
Before diving into the fixes, it helps to understand why TecDoc throws this specific error:
Use these for communicating with your technical team or help desk.
If you recently upgraded TecDoc or changed your hard drive configuration, the Windows Registry might be pointing to the wrong place. Press Windows Key + R , type regedit , and press . For a workshop or IT administrator facing this
Permissions and file system issues
Use these for a simpler, more direct approach for people using the software.
The "Loading data failed, check the configuration file" error in TecDoc is a classic case of a frustrating, obscure-sounding technical issue with a surprisingly simple root cause. For most, the fix lies in either the config file or a single, problematic Windows update.
The error means that the application successfully launched, but when it attempted to connect to the data source using the instructions in the configuration file, it failed. TecDoc is essentially saying: "I have your settings, but those settings don't lead to valid data." Before diving into the fixes, it helps to
TecDoc frequently updates its Data Quality Management (DQM) KPIs. If your configuration file is based on an older template, it may fail because it lacks the required attributes for modern vehicle identification.
A: While the core issue may be different, the troubleshooting principles are similar. "Error 35" often relates to issues with viewing part images. This is a separate issue which often can be fixed by creating a registry file using the instructions found in online TecDoc help forums.
Common root causes include:
Windows User Account Control (UAC) sometimes blocks applications from reading files inside the C:\Program Files or C:\Program Data directories.