- Purchased Diablo III but can't install it
- Can't install Diablo 3
- Can't patch D3
If your region is currently patching or undergoing maintenance there might be a known issue affecting all players. Check @BlizzardCS_EU on Twitter, or the technical support forums linked at the bottom of this article, for information on any ongoing issues.
If you are receiving a specific error code (such as BLZBNTAGT00000BB8), you can search for the error code at this link. The error code's page will have more specific troubleshooting. If you do not receive an error code, the steps below may resolve problems in which the Battle.net Desktop Application can’t download data or update game files.
Configure your security software's exception list to allow Blizzard applications to run.
If you're using a wireless connection, optimize your internet connection to rule out a connection issue.
Run the repair tool to repair any damaged game files.
Update your drivers to resolve any compatibility issues.
Disable any proxies that may interfere with the login module.