This error usually occurs when your video drivers are corrupted or out of date. You may also receive this error if your computer does not meet the system requirements (World of Warcraft, StarCraft II, Diablo III, Hearthstone, Heroes of the Storm, Overwatch). Follow the steps below to resolve this issue.Note: This error is also occurring with some Linux-based installations using WINE.
Update your drivers and operating system to resolve any compatibility issues.
Restart the Blizzard Battle.net desktop app to clear any stalled Agent processes.