If Blizzard's PC client doesn't display a Start button for you to select, or the button is greyed out, you may be able to force the game to open by creating a new shortcut on your desktop and launching it after you put this string of text in its target field: Though this may reset your queue position, queue times don't seem too long at the moment, and you should be able to load in properly once you've waited a few more minutes. Some players have reported that if you're stuck in the '1 minute left' Diablo 4 queue for an extended period of time, you may be able to fix the problem by closing the game, fully restarting, and then relaunching the game.

Unfortunately, there's no known fix at this time, so you may need to simply restart the game and go through the queue again. Many players are reporting that they're stuck at the 'Logging into Diablo IV' screen that appears after getting through Diablo 4's queue. There's currently no workaround for this, although Blizzard is aware of the issue and is actively working to resolve it. Many players, particularly those on PlayStation, have reported seeing an 'Unable to find a valid license' message along with the error code 315306 when trying to log into the game. Diablo 4 'Unable to find a valid license' 315306 error Alternatively, it could also mean that there's a new update available for the game, in which case you can fix the problem by closing the game, installing the update, and launching it after it finishes.

Diablo 2 beta not working