SOLUTION TO PROBLEM (by Schutzy):
If I launch the game now and it puts me in queue, if I Alt-Tab to desktop it will throw an error and simply kill the Diablo 4 software.
I am on Nvidia 1080 latest drivers. I play “Fullscreen” with 1440p, windows is set to 2160p.
Anyone else having this problem?
This is the picture of the error (without space): https:// prnt.sc/Z38bORKKbYFQ
5 Likes
Is it possible the client updates threw your settings back to fullscreen windowed? because it did with mine.
Its still Fullscreen nonwindowed as I see the behavior of it launching and when it switches back to desktop. It does the “laggy thing”.
Except it just crashes when it returns to desktop.
It worked ok last week.
I think Nvidia driver update from yesterday broke it.
It’s not the new driver update, mine behaves the same and I did not update to the newest driver. It did not crash last week on alt tab
2 Likes
It did not crash last week.
But now, for me, with newest driver, it crashes.
Yeah, it didn’t crash last week for me neither but it crashes now, I have the same driver as last week 
3 Likes
Sorry, I missunderstood your post.
So you are getting same behavior as me, I am very sorry for both of us, but at least I am not alon in this boat 
No worries
I hope they just messed something up that crashes because the beta was not up, but perhaps we are not allowed to minimize our games then :E
Having the same issue, alt tabbing consistently crashes the game. (1080ti)
Same behaviour here. 1080ti.
No way to stay in queue and alt-tabbing, that is very troublesome.
Delete the Diablo 4 Folder in your Documents Folder. Start again and its not crashing the game anymore. 
11 Likes
This guy is a saint! I will put your solution in top post with your credits.
1 Like
Oh wow! That works - I’m guessing because it’s reset the game to fullscreen windowed mode. I would guess changing it to dedicated fullscreen again will cause it to crash again… We’ll see once I’m through the 61 minute queue.
Let us now if changing to dedicated Fullscreen will bring alt-tab crashes back. Im not gonna try it 
Yeah, don’t think I’m gonna risk it either. Not after waiting an hour to get in!
thank you soooo much! Live long and prosper!
1 Like
Yeah, if I turn off my monitor while I’m in the queue, it crashes the application. Same thing happened last weekend.