This is usually a driver issue. Ensure you are using a "Full Chip" Lexia 3 interface with the 921815C firmware.

Sites like MHH Auto, Digital Kaos, or French Car Forum often have dedicated threads with Mega.nz or Google Drive links.

Ensure the network adapter is disconnected (to prevent the software from trying to update) and that "Virtualize Intel VT-x" is checked in the processor settings.