: Open your software on the offline computer. When the authorization window appears, select the option that says "No Internet on this computer."
: Take that file back to your music computer. With the authorization window still open, simply drag and drop the .auz file directly into the middle of the window. Authorize.auz
: The software will provide a unique "Your Hardware Code." Write this down or save it to a thumb drive. : Open your software on the offline computer
Check out the official Ableton Support Page for detailed troubleshooting tips. Authorize.auz