You should also check whether the game servers are undergoing maintenance. For more ways to check network issues, you can refer to this post: 11 Tips to Troubleshoot Internet Connection Problems Win 10. You can try restarting your router and restarting your computer. When you get FFXIV unable to complete version update error, the first thing you should do is troubleshooting network issues.
If you encountered the same problem, you can try the following solutions. It usually comes with the message “Unable to complete version update” as well as some codes like 30437, 30427, 2020, 30419, or 30605. Some Windows users reported that they received an FFXIV Launcher Error while playing this game. Nowadays, it is available on many platforms, including Microsoft Windows, macOS, PlayStation 3, PlayStation 4, and PlayStation 5.
