Blue Post
Original thread hosted on Blizzard's official forums.
WOW51900309 After SoO patch
View on Blizzard forums:
https://us.forums.blizzard.com/en/wow/t/wow51900309-after-soo-patch/2312505/24
Sigh, thank you folks, bare with us, we can see we have packet corruption that is messing up your login attempts, we believed we’d found a potential culprit with an integer overflow, but apparently not.
Engineers diving back in!