Troubleshooting step for connection-related problems on Windows.
Steps for linking a Third Party Platform's account to your Battle.net Account.
How to troubleshoot connection issues between Battle.net and Steam
How to resolve the error message "We can’t process this code at this time"
How to unlink a console account from a Blizzard account
Troubleshooting game or Battle.net services connection error BLZBNTAGT00000BB8
Troubleshooting steps to help you connect to the Battle.net desktop app.
Information on troubleshooting connection and installation issues using another network.