It seems that the game could not be launched due to a permission-related problem
since it was installed on an NTFS-formatted SSD.
I reformatted the SSD with Ext4 and mounted it.
I was able to update the game anyway.
I haven't gotten into the game yet, but I think it should be fine.
Hello @TANE1978, using NTFS with Proton is known to be finicky and as you've found, using a Linux native filesystem is recommended.
In general, we're using one issue report per unofficially supported game title, and usually I'd transfer this issue report to #580, but it sounds like you've resolved your immediate issue. Feel free to add any other compatibility details you encounter with this game to that compatibility report. Closing per the last comment.
proton experimentalx1 2022-02
Compatibility Report
System Information
I confirm:
steam-39210.log
Symptoms
The program itself closes immediately after pressing the start button.
The program itself does not start even if I set it to Browser 1 in FFXIV_BOOT.cfg. Even if I set it to 0 or 2, it doesn't start at all.
There is a possibility that I am making a rudimentary mistake, but since the program does not start even after modifying the config file, it is difficult to search beyond it, so I reported it.
Reproduction
1.Just press the PLAY button.
2. The "Preparing to start" progress bar will appear.
3. The "Playing" button will change to "Play".
4. Game launch fails