The launch of Diablo 4's Season of Hell's Legacy, which coincides with the franchise's 30th anniversary, was significantly delayed due to widespread login errors. Players attempting to access the new season encountered issues, primarily error codes 300006 and 300008, preventing them from connecting to the game.
Blizzard acknowledged the problems shortly after the scheduled launch time, stating that the team was actively investigating. Approximately two hours later, the Diablo social media account confirmed a delay to the season's launch, during which Diablo 4 was entirely inaccessible. This outage persisted for several hours as developers worked to resolve the connectivity problems.
It took an additional two hours before Blizzard announced that the login issues had been resolved. However, some game features were temporarily disabled as a precaution. The Season of Hell's Legacy ultimately went live over six hours after its original intended start time.
Season of Hell's Legacy introduces a new live service season that celebrates Diablo's 30th anniversary. The content brings back the iconic character Deckard Cain to guide players through a quest against the prime evils: Baal, Mephisto, and Diablo. This questline aims to recreate memorable moments from previous Diablo titles. The season also features nine Legacy Unique items inspired by their classic counterparts, alongside various other adjustments and enhancements.
The delayed launch occurred concurrently with the anticipated release of Diablo 4 on Switch 2. This meant that many new players on that platform experienced their first taste of the game amidst technical difficulties. Further announcements made at BlizzCon 2026 included the return of the Amazon class from Diablo 2 in a paid pack for the first half of 2027, the surprise reveal of Diablo 5 slated for a 2029 release, and a new Netflix animated Diablo series.