Thank you for the reply Ceallach,

Don't worry about the PC specs right now. Is this the only time you received this error? Or does it come up every time you try to log in now?

This looks to be a connection error, meaning something is blocking your connection to the servers. Has anything changed on your PC (updates, anti-virus, etc.) that coincides with the error?

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