Vercion check failed [30605] [10009] [10020]

[IronThistle]

On 2025/10/20 I could login and play FFXIV without errors. I play on PC.

Today, 2025/10/21 at 2350 UTC I attempted to login to FFXIV in the same manner as I always do. The launcher gave me the following error:

FFXIV Boot Error
Version check failed. Please confirm your network settings. If this does not solve the problem, you may need to whitelist FINAL FANTASY XIV in your security software.
For further assistance, please visit the SQUARE ENIX Support Center.
http://sqex.to/x4w
[30605] [10009] [10020]

I have made NO CHANGES to my PC since last night.
My network has not changed and I can use every other app on my PC that requires network or Internet successfully.
I do not use a VPN.
I do not use any anti-virus except Windows Defender, which has exceptions added for all FFXIV-related executables.

All FFXIV related executables are whitelisted and allowed through Windows Defender.
I have rebooted multiple times and restarted the game multiple times and still get the "version check failed error."
I have also tried turning Windows Defender OFF and still get the "version check failed error."

I need help to resolve this error please

[MoonstalkerZ]

I am having the same problem. It worked just fine this morning, and I didn't even turn my computer off but now the launcher can't connect.

[Sixftrabbit]

Same issue here. I think this is apart of the Amazon outage yesterday. I was able to get through once last night and once this morning and now getting the version check errors again. I think once the servers start getting congested we are getting pushed to a server that is still having issues. Elder Scrolls Online I am having the same problem with but not Diablo 3. I'm in CST if that helps.

[mikklo]

I have been having this problem as well kind of recently. I have AT&T on the east coast USA and basically the routing goes to Atlanta with my ISP and down to the Miami node on NTT and the rest of the way using NTT nodes . . .

[Ard_Xiol]

I have AT&T fiber on the East Coast as well. Maybe it's something related to their service?

[JohncarterIx]

i have same problem at&t

[Nicoooooo]

AT&T Fiber, southwest USA. Same issues as well. Had this issue Monday and yesterday and was able to get in eventually, but as of today the launcher does not let in at all. Version check failed every time

[Jennacide]

Same problem but started today. Worked fine up until last night. Also have AT&T fiber, SE USA.

[JohncarterIx]

my at&t internet goes waky some times it good then bam.

[Kari_]

I am having the same problem, have been having this issue since around the 19th (4 days ago). Also have AT&T fiber and in the SE USA. Using an Asus Rog strix, if that matters. My partner has been able to log in though (he'll occasionally have the same error but not every single login attempt like I've had lately, and can sometimes get through). I've tried updating windows, restarting computer, clearing browser history, restarting wifi, etc. Nothing has worked. If anyone gets a solution, would love an update.