Information on how setting Appear Offline in the friend's list affects visibility in Blizzard Games.
Information about troubleshooting problems with the Blizzard Battle.net friends list
The Blizzard Update Agent could not install in the specified folder location.
How to appeal an account action.
The support website shows an open ticket and the player cannot cancel or dismiss it
Steps on how to close down background applications and processes.
Information on error BLZ51900002
Troubleshooting your security programs can resolve issues preventing you from installing or using Blizzard software.
Out-of-date drivers and operating systems can cause a variety of issues, and are one of the first things to check when a game is having problems.
How to reset in-game options