Use the steps below to troubleshoot installation issues for Blizzard games.

What to do if you are unable to install or patch Diablo III

This error occurs when you have connected to our patch server but you cannot download patch information.

Problems with patching may be resolved by disabling the read-only setting on system folders.

This error means Blizzard Agent (the process that installs and patches our games) couldn't stream necessary files.

This error means Blizzard Agent (the process that installs and patches our games) couldn't stream necessary files.

Details of classic games patches, where to download them, and how to install the latest updates for classic games.

Information on the Ghost Kerrigan reward in Diablo 3

Blizzard Battle.net desktop app information

Information on the mobile payment option for Blizzard Balance codes in Argentian, Chile, and Mexico.