Thank you for the reply simplyjames168,

We apologize for the trouble you have been having, however, this issue is not unique to patch 4.2 and can be caused by a variety of things. Due to the nature of an error like this, we have to ask that you try everything in order to fix it as every computer is different and the root of the problem can arise from almost anywhere. It is an unfortunate inconvenience, but since the problem affects a relatively small number of people, we can rule out that the problem stems from the server itself.

Additionally, the link we provide does not require that you purchase anything and is only one option we list. It is there for those who prefer to try port forwarding themselves and is by no means a requirement to resolve the issue.

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