Players who downloaded the latest Diablo 4 patch are currently experiencing login issues resulting in Error: 300010 messages.
We’ve got a response from a Diablo Community Manager on Reddit. Blizzard is currently investigating the error code and working on a fix for the issue.
Comment
byu/Change_change9 from discussion
indiablo4
The Season 2 start will be delayed by a few hours as well. We’re not sure if it has anything to do with this login bug.