FFXIV Boot Error "Unable to complete version check. [30605] [503]"

[Venkea]

Since last night, I haven't been able to log in to the game. I've tried searching for the error and completing the steps listed, but none of them have worked. I've tried updating my firewall settings (and disabling it temporarily for testing), tried setting my computer to the state it was in before the most recent update, tried booting in safe mode, etc. I'm really not sure what to do at this point. Any advice?

[Rhaervis]

Good morning and thank you for posting in the Final Fantasy XIV Technical Support Forums,

We apologize for the delay in our response, please try the following troubleshooting steps:

- The game will use the Internet Explorer web browser to connect to the internet. Open Internet Explorer, then open the "Tools" setting, go to "Internet Options" and adjust the following settings:
- Under the "General" tab, please delete ALL browser history.
- Under the "Security" tab, please move the slider to the lowest possible settings or no higher than "Medium"
- Under the "Privacy" tab, click “Advanced” and select ‘Accept’ under both First Party and Third Party Cookies.
- Under the "Advanced" tab, please make sure that "Allow software to run or install even if signature is invalid" is CHECKED.
- Make sure that all SSL and TLS (EXCEPT SSL 3.0) are CHECKED. [SSL 3.0 should be UNCHECKED]
- Hit "Apply" to save the settings, and then "OK, to close the Internet Options menu.
- Please RESTART your PC now. Once your PC has been restarted, Right-Click the FFXIV launcher icon once more and select "Run as Administrator"

-Make sure your fire wall or antivirus program is not interfering with the game

- Check to see if the following port ranges are opened on your router. You can contact your ISP and request they open them for you:
▼TCP
54992 through 54994,
55006 through 55007,
55021 through 55040

-Make sure the installed anti-virus is not blocking any files.

Thank you for visiting the Final Fantasy XIV Technical Support Forums

[Rhaervis]

Thank you for posting in the Final Fantasy XIV Technical Support Forums.

Due to no response from the original poster, this thread will be moved to 'Closed Concerns.' If anyone is still having this particular problem, please create a new thread and we will assist you in any way we can.

Thank you for visiting the Final Fantasy XIV Technical Support Forums.