OMGGG! I was freaking out I thought I was the only one 
How do I fix this??! I need to plaaaaaaaaaaaaaay!
Same issue here.
I donāt own Vanguard so it doesnāt appear to be game specific.
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I am having the same issue too. I cannot access my games at the moment since the Launcher is crashing upon startup.
Same here. I just updated to Windows 11, so I thought it was that, but I guess itās actually just a battle.net client issueā¦ amazing.
Same issue as well. Tried uninstalling and reinstalling and no fix.
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Same thing here. Sign into app, it opens then closes immediately
Even worse, Diablo II Resurrected cannot be run directly because the splash screen says that I havenāt been online for 30 days, despite playing this morning. Great way to kick off the holidayā¦
Same problem, I donāt play vangard either, never had it installed. All I play is D2R. Weird thing is I get a different error code every time it crashes
having the same issue getting a long reference code to use
I think its the issue of windows 11 probably not game specific
Yeah Iāve been getting it too! Will not open! Was fine all last night while playing Vanguard. But now its trying to update Vanguard and keeps crashing!
6A4544A8-D026-4468-AF98-CDA0A65B7E5F
Iām having the same issue now. I open battle net app, it launches and logs me in then instantly crashesā¦
BA6F9411-8818-4B3D-9DE5-6F688F7B8296
my friendās pc is working just fine
Windows 10 here. Same problem.
same isssue here 
getting this code : 96177A6D-ECF8-4230-A870-01B6BBC8C976
Same happening here!.. Windows 10.
I havenāt upgraded to windows 11 and Iām having the same problem
Same with my wife. We just both purchased Vanguard. Mine was seamless, hers on the other hand popped the error up and now she cannot use the launcher.
Yes same issue here. Immediate crash after opening battle.net
yea my friend is currently playing while im getting crash errors