Greetings SyberFox,

We would like to apologize for the error you are experiencing. We would like to suggest that you try the following troubleshooting steps:

- Perform a clean boot by opening the task manager and select the 'Start up' Tab. Then be sure to disable everything.
- Please be sure that Final Fantasy XIV is installed to the C: Drive. (Having the game installed on a different drive can sometimes lead to issues)
- Please be sure to disable or remove any overlays (Discord, Steam, NVIDIA etc.) as they may interfere with startup.
- Make sure that the Windows OS is fully updated. (Please ensure that optional items are also installed)
- Due to the nature of the issue, we would highly suggest re-installing as this will ensure that all the files are cleared out.
- We would also suggest to delete the Patch Folder: Navigate to the folder using this path This PC > Docs > My Games> FFXIV ARR > Downloads > FFXIV patch (Then either rename or remove the folder, the next time FINAL FANTASY XIV is launched, the client will repair the folder)

If you do not see an improvement, please feel free to respond to this thread for further troubleshooting.

Thank you for posting in the Final Fantasy XIV Technical Support Forums.