Game error 30426 19900 740

After installing the update patch and entering the login and password in the launcher this error appears unable to complete version update 30426 19900 740 ...
Tried reinstall the game, reset router nothing helps.
Please help !!!

I have the same problem, they didn’t help me here, I found a way out of this situation in the launcher settings, I turn on the launch with directx 9 and then the game starts. but this is not a solution to the problem, those support did not help ..., but they should have sent everyone the approximate wording of the answers and that's all, but it does not help, and yes, the problem appeared just after the patch was updated! those support pay attention to our requests, I also created the same post a couple of days ago, the problem is massive!

and yes, manipulations with the router do not lead to anything

Good morning and thank you for posting on the Final Fantasy XIV Technical Support Forums.

We apologize for the delay in our response Lander, please try the following troubleshooting steps:

- The game will use the Internet Explorer web browser to connect to the internet. Open Internet Explorer, then open the "Tools" setting, go to "Internet Options" and adjust the following settings:
- Under the "General" tab, please delete ALL browser history.
- Under the "Security" tab, please move the slider to the lowest possible settings or no higher than "Medium"
- Under the "Privacy" tab, click “Advanced” and select ‘Accept’ under both First Party and Third Party Cookies.
- Under the "Advanced" tab, please make sure that "Allow software to run or install even if signature is invalid" is CHECKED.
- Make sure that all SSL and TLS (EXCEPT SSL 3.0) are CHECKED. [SSL 3.0 should be UNCHECKED]
- Hit "Apply" to save the settings, and then "OK, to close the Internet Options menu.
- Please RESTART your PC now. Once your PC has been restarted, Right-Click the FFXIV launcher icon once more and select "Run as Administrator"

-Make sure your fire wall or antivirus program is not interfering with the game

- Check to see if the following port ranges are opened on your router. You can contact your ISP and request they open them for you:
▼TCP
54992 through 54994,
55006 through 55007,
55021 through 55040

-Try disabling background applications and do a clean boot by opening the task manager and selecting the “Start up” tab. Disable everything and then restart the PC.

Thank you for visiting the Final Fantasy XIV Technical Support Forums.

thanks, problem solved, topic can be closed