If you are getting Error Code Saxophone, that usually means for whatever reason, the Blizzard app is not logging into the account that has the licenses for the full game installed. Also make sure that the servers you are logging into are the ones appropriate to your region. There was an update with TWAB: [quote]Saxophone Errors when Launching: Players may erroneously encounter Saxophone errors when launching the Destiny 2 application directly from the .exe file. Players who encounter this issue must close the application and relaunch through Blizzard’s Battle.net app.[/quote] So do not launch it from your desktop icon, but launch battle.net and launch your game from in there.