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

Information about error BLZBNTAGT000008AC

Information on error BLZ51900002

Information on error BLZBNTBTS0000005D

Troubleshooting steps for Diablo II: Resurrected connection problems on console.

Information on error BLZOWCLI00000004.

Information on the errors received when restoring a Death Knight in Wrath of the Lich King Classic.

Information on error BLZOWCLI00000005.

Troubleshooting problems with this quest

Troubleshooting steps to resolve this error when installing the Diablo II expansion Lord of Destruction