Information about how the Appear Offline setting in your friend's list affects visibility in Battle.net Games.
Troubleshooting for getting an Error 6:3 in StarCraft: Remastered.
Troubleshooting error 500 on a Blizzard site
How to access online play on Diablo III on the Nintendo Switch
What to do if you receive this error when attempting to start Diablo II: Resurrected
Information on what to do if you receive an error message saying you are online with your own key in Diablo II (2000).
How to manage your Battle.net profile visibility and chat settings
What to do if you cannot log in with your character and you receive this error message
Troubleshooting for issues loading the BattleTag or Real ID friend list