What to do if you can't open the Battle.net desktop app, and there are no error messages when you try.
Your login session has expired. Please log in again.
How to obtain error logs for Blizzard games
Troubleshooting steps when you can log into your account management page but not the Battle.net App
A disk error occurred while loading a file required to log in.
Blizzard Customer Support cannot lock your account on request
We can't connect you to the Blizzard patch service. Please check your internet connection and try again.
Troubleshooting steps to help you connect to the Battle.net desktop app.