90002 Disconnect error after every duty complete

For whatever reason, whenever I leave a duty to go back to the world server, I get disconnected instantly (90002, or 90k). I'm able to reconnect no problem and I'm not experience any lag in or outside a duty. I'm on Diabolos (Crystal DC).

Good afternoon and thank you for posting on the Final Fantasy XIV Technical Support Forums.

When exactly did this start happening? Do you recall anything changing/updating on your PC or home network that coincides with this?

Have you experienced disconnections at any other point in the game, or just while leaving Duties?

What have you tried so far in order to alleviate the issue?

We hope we can be of assistance in helping you enjoy the exciting world of Final Fantasy XIV!

This started happened sometime after the 5.08 patch. The only other updates Ive might of had is a windows update on 9/10 (Windows 10). I don't have any other updates to my PC or new programs beyond that.

I only experience the 90k error after leaving a duty, haven't had the issue starting duties, or logging in/reconnecting.

I'm not sure what else to try at this point, I don't know the port FFXIV uses to ensure its open fully, but FFXIV is allowed through my firewall.

Good morning and thank you for the reply.

Could you try changing the Internet Explorer settings? If not, please try 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.
- Right-Click on the FFXIV launcher icon and select "Properties"
- Go to the "Compatibility" tab, and change the compatibility mode to "Windows 7"
- Hit "Apply", then "OK" to save the changes.
- Please RESTART your PC now. Once your PC has been restarted, Right-Click the FFXIV launcher icon once more and select "Run as Administrator"

Please also try forwarding following ports:

open the following ports:
▼TCP
54992 through 54994,
55006 through 55007,
55021 through 55040
-Contact ISP


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I may of fixed it tonight, I added an exception into Windows Firewall for the actual game (not just the boot or launcher) and it seems fine for now.