Same thing, error WOW51900328 since this morning. Followed the reset interface steps, closed firewall, etc. No difference. Logged out yesterday evening, all worked fine. Playing on Nethergarde Keep EU Classic.
Play on Linux Mint 19.2 / Lutris 0.5.3 / Wine
Just adding my case to the pile.
Playing on Arch Linux + Lutris, same issues since this morning.
This seems to halve solved the issue for me and others, and ofc. enabling ipv6 in the wow client after the ipv6-tunnel has been activated.
https://eu.forums.blizzard.com/en/wow/t/cannot-log-into-any-realm-wow51900328/83610/165?u=bagga-ten-storms
Playing on windows 10 - problem still not fixed.
Adding myself on the pile, windows 10, issue since yesterday when I started getting “transfer aborted: instance not found” when walking into a zone. Now I can’t log in thanks to this error. Did you really just pre-emptively ban a bunch of devices or something blizz?
Not working for me either. Error code WOW51900328. Playing on Ubuntu via Wine/Lutris.
Seems like a solution has been posted here: Cannot log into any realm WOW51900328.
This got is working again for me:
For the windows people try this:
I have also confirmed that Blizzard’s Ddos preventien measures are most likely effecting this problem sense this is ip related. Ipv6 solution only works on ppl whose network knows how to use Ipv6 protocol (generates an IPv6 address to replace your normal IPv4 adress)
Alternative solution is to get an VPN until this problem resolves itself. Maybe a free trial one. Worked for me but im still annoyed.
VPN did not solve it for me, only IPV6 tunneling.
I did see some people suggesting changing the TTL (time to live) of whatever it was, network-stuff anyways. To resolve this issue too, on ipv4 still.
Thank you sir, it works.