Unable to play today due to Error 90000 (Tonberry)

[Seaox]

If it is about my router and the port forwarding as you mention, how come my niece can login and i cannot on the same computer?

[Raist]

If it is about my router and the port forwarding as you mention, how come my niece can login and i cannot on the same computer?

Sorry.. missed that. Thought you were on different systems. See a lot of people having problems like this that are on separate systems and port forwarding is the root of the problem because they've basically locked some specific parts of the server communication to only go to one device with the forwarding rule.

Typically if the only response you are getting is about a connection lost, it means pretty much just that. The socket has dropped for some reason. Are you both in the same Windows User Profile? If not, your login may have security that gets in the way while hers does not. If you are in the same Windows profile, it may be an issue with your player data locally--corrupted file that prevents it from loading properly and the game errors out, but isn't doing it gracefully so you just get the connection lost error.

You could try renaming your character's top profile folder by appending _OEM to the end of it (the FFXIV_CHR1234567890ABCDEF folder) to see if you can force it to download the critical components with your next login. If it works, you will not have your macroes and hotbar settings and such and will need to copy them in from the old profile folder. Do them one at a time or in batches in case one of them makes the problem come back, then you know which one needs to be rebuilt manually.

You could also try the restore option from within the launcher after you log in (don't hit the green Play button yet). That is, if you've previously saved your character data to the server. Otherwise, your only option might be a Windows system restore or other Backup/Recovery option you may be using--start with the most recent restore and work your way backwards. Just remember this may undo other changes that have been made to the system as well.

Other than doing these kinds of things to recover local files, it could be something at the server level that you would need to take up directly with SE through the support portal contact options.