Press Win + R , type regedit , and hit Enter. Navigate to the Autodata Path:
If you receive a "Missing Registry Key" error, you may need to run the RegSettings files (usually RegSettings_x86.reg for 32-bit or RegSettings_x64.reg for 64-bit systems) found in the installation folder.
This is common in Russian-modified versions. Reinstall using a clean multilingual ISO. Alternatively, copy the English.lng or en_US.mo file from a working AutoData installation into your Languages subfolder.