Box art - Call of Duty: Warzone

How to fix Call of Duty ‘Sail 630 Nuclear Bug’ error

The Call of Duty “Sail 630 Nuclear Bug” error has appeared for players in both Warzone and Black Ops Cold War. It usually pops up when users have reconnected to the internet, either by connecting to or disconnecting from a VPN, or just their home connection in general. While an error popping up is bad enough, there are reports of players finding that their accounts have been banned when this error appears. Here’s how to fix the Call of Duty “Sail 630 Nuclear Bug” error and get the CoD account unbanned.

Call of Duty ‘Sail 630 Nuclear Bug’ error fix

How to fix Call of Duty 'Sail 630 Nuclear Bug' error

To fix the Call of Duty “Sail 630 Nuclear Bug,” players will want to:

  • Try restarting the game.
    • Sometimes a simple “Turn it off and back on again” can work wonders. Give it a go!
  • Reboot the console or PC.
    • Similarly, a system reboot can help get things working again.
  • Make sure you have a stable internet connection.
    • Call of Duty needs consistent access to the internet to work properly. A wired connection is the most reliable, if available.
  • Don’t cheat or use exploits.
    • This is a preventative measure, but it should still be included here. Don’t cheat or your account can get banned.
  • Contact Activision Support.

If the reports of this bug banning honest players are accurate, then hopefully the developers over at Treyarch Studios and Raven Software are working on a permanent fix.

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