I have noticed (and replicated) this bug with 100% accuracy over the last few days.
  • Login, connect to Chaos Data Center.
    Return to start menu.
    Switch to Aether Data Center.
    FFXIV will hang for about 60 seconds as it struggles to connect, then it will do a 2002 error.

In reverse, it happens about half the time. If I login to Aether first, then try to log into Chaos, there's a 50% chance it will give me a 2002 error. This is incredibly annoying and constantly happening, requiring the launcher to reboot and then requiring me to login again.

System: PS4
Frequency: Always