False Call of Duty Zombies Bans Reportedly Caused by Bug

Dozens of Call of Duty Zombies players are reporting false bans after encountering a strange bug.

Published: April 7, 2021 2:01 PM /


Call of Duty Zombies bans cover

Dozens of incorrect Call of Duty Zombies bans have been reported by players, apparently due to a bug that is affecting certain games once they get to a high round.

Call of Duty: Black Ops Cold War is the latest in the long line of Call of Duty games. Happily, this newest release also happens to include the "Zombies" game mode that's been a fan favorite ever since its introduction with the Black Ops sub-franchise. Unfortunately, a bug has apparently been popping up and resulting in a permanent ban from the game, even though all of these players swear up and down that nothing nefarious is going on.

Call of Duty Zombies bans slice

Call of Duty Zombies Bans and the Sail 630 Nuclear Bug Error

A number of the troublesome Call of Duty Zombies bans have been collected on Reddit. A common theme of these bans is players encountering the "Sail 630 Nuclear Bug" right before being disconnected from the game and finding that they have been permabanned, typically after they've played a particularly long game.

"I was playing Firebase Z last night when my game suddenly crashed and I got an error," read one such account on Activision Support. "I never [received] an email detailing my ban so I don't know if my account was compromised or if it's a mistake from Activision[.]"

Call of Duty Zombies bans Sail 630 Nuclear Bug slice
The dreaded "Sail Nuclear 630 Bug" that apparently precedes a false ban. (Image credit: Swohgic on Activision Support)

Many of these apparently erroneous bans have the following in common:

  • Playing on PC
  • Playing the Zombies game mode.
  • Reached Round 50 or higher.
  • Received the "Sail 630 Nuclear Bug."

It should be noted, however, that not all of the listed bans have these similarities; many simply feature players reporting an erroneous ban, asking for help, and having other players in the replies say that they're also encountering a similar problem.

"[I] assume this is a bug because [I] have never cheated and [I] am [too] dumb to know how to cheat. [Please] help me[, I] just want to play some zombies with my boys." – Call of Duty Player Hyostylic on Activision Support

Naturally, a common defense of a player being banned from a game is to say that it was in error. Sometimes it turns out to be a bug or a different kind of mistake on the part of the developer and sometimes it turns out that the banned person was not telling the truth.

That certainly could be happening here, but the sheer amount of bans being reported over the last week — apparently since April 2, 2021 — makes it seem as if there genuinely is some kind of bug that is causing erroneous Call of Duty Zombies bans.

Activision or the developers have not yet had an official response to this issue, save for a single Reddit comment from a Treyarch employee.

"I am unable to assist with this issue. All infractions undergo a thorough review process by the security team before enforcement," read a comment from /u/FoxhoundFPS, a Reddit account flaired as a Treyarch employee.

We can't say for sure what's going on either way. The apparent increase in ban frequency and consistent claims from the banned players that they were doing nothing wrong certainly raises some eyebrows.

"At this point I don't even know what to do. There is no way to contact anyone at Activision/Treyarch. At this point we will probably have to wait until a big [YouYuber] gets banned for them to do anything about it." – /u/Korlesa on Reddit

Hopefully, Activision will figure out what's going on with these Call of Duty Zombies bans and correct the problem sooner rather than later. We've reached out to Activision for comment on the matter and will update this article when we receive a reply.

Have you encountered the Sai 630 Nuclear Bug and gotten banned in Call of Duty Zombies? What's your experience been like with Activision Support? Let us know in the comments below!

Have a tip, or want to point out something we missed? Leave a Comment or e-mail us at tips@techraptor.net

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More Info About This Game
Learn more about Call of Duty: Black Ops Cold War
Raven Software
Release Date
October 13, 2020 (Calendar)
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