Blizzard have announced that they will be waiting a while before launching Hardcore realms for the Classic Anniversary. There’s a technical issue that is causing the realms to be unstable, and Blizzard are waiting to have a fix before they put the servers live.
Today, we discovered an issue that could cause Hardcore realms to be unstable on the new patch.
To ensure that players do not experience unfair Hardcore character losses, we’re keeping the Hardcore realms offline until the issue is resolved.
We do not currently have an ETA for when Hardcore realms will open.
Thank you for your patience.