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  1. #1
    Player
    Leaino's Avatar
    Join Date
    Jul 2025
    Location
    Limsa Lominsa
    Posts
    2
    Character
    Jak Bioux
    World
    Adamantoise
    Main Class
    Summoner Lv 100

    Error Code [11006] [20641] [20643]

    Simply put trying to reinstall the game, but the setup program gives an error. Now, I'm just looking for a way to fix the current error and deal with the other stuff later.
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    Last edited by Leaino; 01-31-2026 at 03:55 AM. Reason: Problem has changed

  2. #2
    Moderator Uhgpaysuhbaliet's Avatar
    Join Date
    Feb 2026
    Posts
    15
    Thank you for posting in the Final Fantasy XIV Technical Support Forums.
    The Error Code [11006] [20641] [20643] is caused by an interrupted connection issue. Try these steps to see if they will work:
    Switch Connection: If using Wi-Fi, switch to a wired Ethernet connection to stabilize the download.
    Run as Administrator: Right-click the FFXIV launcher and select "Run as Administrator".
    Restart Network Equipment: Power cycle your router/modem by turning it off for a few minutes and back on.
    Safe Mode with Networking: A commonly successful fix is launching Windows in "Safe Mode with Networking" to run the patcher, which disables interfering background applications.
    Adjust Security Settings: Ensure your firewall or anti-virus is not blocking the game files, specifically allowing the ffxivpatch folder, typically found in Documents > My Games > FINAL FANTASY XIV - A Realm Reborn.
    Check Port Ranges: Ensure your router allows traffic on TCP ports 54992–54994, 55006–55007, and 55021–55040.

    Thank you for visiting the Final Fantasy XIV Technical Support Forums!
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  3. #3
    Moderator Pudringchumenes's Avatar
    Join Date
    Feb 2026
    Posts
    12
    Thank you for posting in the Final Fantasy XIV Technical Support Forums.

    Please be advised that this thread will be closed.
    If you have any more questions or concerns, please make a new thread in the Technical Support forums.

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