Some overlay programs can cause Blizzard games to crash.
Cannot install or Patch Call of Duty: Black Ops 4
What to do if you cannot change the email or phone number that shows on the login screen because the field is greyed out
What to do if you can't open the Battle.net desktop app, and there are no error messages when you try.
Troubleshooting steps to save a credit card in your Payment Methods page
Troubleshooting for game crashes with error "The application encountered an unexpected error"
Troubleshooting steps for communication and transmission errors.
Troubleshooting steps for this StarCraft II error.