Diablo: "Code 300008"

The login stops with code 300008, often after waiting in the queue. Blizzard treats it as a connection issue and points to service news first.

Is Diablo down right now? Operational: 2 problem reports in the last hour. If it were down for everyone, this error could come from there; right now it looks normal.

Fix it

How to fix "Code 300008"

Check the news on the login screen or BlizzardCS on X for service updates.
Restart your modem and router.
If you play on Wi-Fi, optimize your internet connection.
Check your firewall, router and port settings.

From Diablo's help pages: us.support.blizzard.com, in our words. Checked on 11 November 2026. If the steps do not help, Diablo's own support is the next stop.

Characters missingHeroes not showing on character select
Code 300202Connection error when logging in
Error 395002Character still held after a sudden disconnect
Code 316610Servers can't talk to your system

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Diablo: "Code 300008"

How to fix "Code 300008"

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