If Pythagoras seems to launch without a valid license, while you purchased one from a partner or  Pythagoras HQ, you would need to try the following:


  • Disconnect the USB key, restart your computer en try to launch Pythagoras
  • If the light of the USB is not lit while connected, try another USB port
  • Install the latest driver (available on our website), restart your system and try to launch Pythagoras with the USB connected
  • Install the latest version of Pythagoras (available on our website), restart your system and try to launch Pythagoras with the USB connected
  • Make sure your Windows is completely up-to-date


If these tips don't solve the problem, feel free to contact our support department (support@pythagoras.net).


Also if the light of the USB flashes, you need to contact our support team.