If you are determined to get your original physical disc running without Steam, you have two options, though they are not officially supported and may compromise your system security.
Why Email Activation and Digital Delivery is Inherently Better euro truck simulator 1 activation code and email better
Install the patch to resolve many legacy DRM and startup bugs. Troubleshooting Serial Key Errors If you are determined to get your original
Many users, paranoid about spam, type [email protected] or [email protected] . Then, six months later, they reinstall Windows. The game asks for activation again, but now you've forgotten the fake email you used. The license server checks the combination of (Email + Code). If they don't match, Then, six months later, they reinstall Windows
Activating the original is best done by purchasing a digital key from a reputable platform like Steam or using the code sent to your registered email after an official purchase.