This EXACT same issue is happening to me! I haven't found anything with a situation so close to mine, my last successful login was 28th Jan, 2026, and since then every time i've tried to launch the game it has simply closed to windows without any loading, opening hangups, crash logs, etc.

Here is a list of things i've tried over the past 2 days with no avail:

Tried (all failed):
- Full uninstall + manual delete game/My Docs/AppData/SquareEnix folders + fresh reinstall (3x).
- boot64.exe as admin + Windows 8 compat + disable fullscreen opt + DPI override System.
- Single monitor (DP 1080p).
- Defender/Firewall off + exclusions.
- Clean boot (msconfig disable non-MS).
- DDU NVIDIA clean + driver reinstall.
- SFC /scannow (repaired files) + DISM RestoreHealth (success).
- Configs wipe + folder rename.

I'm starting to think this is an FFXIV problem and not a computer problem, i feel like i've exhausted every realistic option to try and fix this.