Error WOW51900328

Support Technical Support
1

I was playing on the tbc anniversary server when the game crashed and when i tried to log in i get the 51900328 error.

The game now takes over 2 minutes to even launch. When it does launch I get to retrieving realm list then it crashes on logging into the game server.

I have:

power cycled the modem and router

run the scan/repair tool

uninstalled reinstalled the game

downloaded a free vpn and tried to connect that way

connected to my phone as a hot spot then try to log in

flushed the dns and renewed it

deleted and renamed the cache/wtf/interface folders

turned off my firewall and tried to connect

removed wow from the app list to forward through the firewall

I really have no idea what else I could do. Retail also gives me the same error. I have like 9 months left on a year sub and now I can’t play.

2

Where do you connect from, what region of the country? What ISP.

May be a temporary issue that clears up, I did just login to retail though, no issue.

3

Eastern US, local cable provider, can browse the internet and play other games on Steam np.

4

same error same problem; also eastern US, local isp is Antietam broadband. all other apps games web stuff all is perfect

5

something interesting for the tech department. one of the firewall rules i created to try to fix this was for 24.105.0.0/18
owned by blizzard. i made the rule free/open bidirectional. didn’t help. but…

coincidentally, my ISP is on 24.170 .

6

really? i am also on antietam broadband

7

i think it’s either Antietam or blizz… someone did a firewall rule and fatfingered the CIDR range

8

Outage

6/12/2026 2:03 PM

Type: Multiple

We are currently experiencing a power related outage in the Keedysville and Sharpsburg areas. Our technicians are aware and working toward resolution. We apologize for any inconvenience and appreciate your patience.

9

I see that but I do not live in that location and my intenet is working fine for everything other than WoW.

10

the keedysvile issue is TV related not internet

11

i just talked to Antietam and they made no routing or firewalling changes this morning at all. 9am EST is 6am Pacific so i’m assuming someone made a routing change at blizzard’s ISP. no TCP packets are getting ACK from 24.105.0.0/18 or from 137.221.96.0/19 to our ISP on ip range 24.170.224.0/22 i used wireshark in testing. many retrans but no ACK

Antietam confirmed and double checked they made no changes this morning

wireshark is showing many retrans packets like these:
No. Time Source Destination Protocol Length Info
138 22.521665800 192.168.50.195 137.221.105.232 TCP 66 [TCP Retransmission] 52805 → 443 [SYN] Seq=0 Win=65535 Len=0 MSS=1460 WS=256 SACK_PERM
No. Time Source Destination Protocol Length Info
143 23.891615700 192.168.50.195 24.105.52.61 TCP 66 [TCP Retransmission] 52802 → 3724 [SYN] Seq=0 Win=65535 Len=0 MSS=1460 WS=256 SACK_PERM
No. Time Source Destination Protocol Length Info
163 27.627046800 192.168.50.195 137.221.105.232 TCP 66 [TCP Retransmission] 52812 → 443 [SYN] Seq=0 Win=65535 Len=0 MSS=1460 WS=256 SACK_PERM

12

I don’t know what that means but is there a way to get it fixed? on a sidenote i can log into d4 without an issue.

Edit:

I tried the VPN route again and now it logs me in just like always when i set my location somewhere else in the US. However as soon as i turn it off it gives me the error. Definitely a routing issue and since Churrak has shown it is not our isp it must be Blizzard. Would appreciate someone looking into it.

13

i was considering installing a VPN so i could play to get around the routing issue. which VPN is best for wow? speed wise

14

I dont know the best i just installed free proton vpn but i did get kicked and have to relog after 20 mins so i dont know if i would do anything too hard. We shouldn’t have to pay for a vpn when we live in the US to play a 20 year old game.

15

confirmed routing issue. installed nordvpn now i can get right into the game. without the vpn blizz and my isp do not speak to each other.

again this change in routing occurred at 6am PST 6/12/2026

16

Thank you, this worked for me. @Blizzard please fix the routing issue.

17

First, @’ing doesn’t do anything in the forums, just fyi.

Second, Blizzard does not have control over where internet data flows. They take information in and spit it back out. Internet connection issues are handled by your ISP, and that is who you have to deal with when this issue arises.

Third, if a VPN fixes your connection issues, it’s an ISP issue. They control the routing of data.

Them’s the brakes. Best of luck.

3 Likes
18

they made a change at 6am PST yesterday that stopped routing to our network. no changes were made at my ISP. your statement “Blizzard does not have control over where internet data flows“ is completely wrong. their ISP does have control over where their data flows.

19

My understanding about NAT tables is changes propagate through out the network, while some ISP’s pick up on them pretty fast, others can take a while to update. Not sure how long it will take for your routing to get this update.

2 Likes
20

i can tell you what they did wrong.

a router handling outbound traffic is configured to not route packets destined for the internal network. this is how it should be.

someone made a mistake in designating the internal network. instead of defining it as 24.105.0.0/18 which blizzard owns, they put 24.105.0.0/10 or maybe 24.105.0.0/8 which overlaps external ranges like my ISP

if i had to guess they put 24.105.0.0/8 and left the 1 out. a typo