Ideas

JohnnyCars's avatar
JohnnyCars
Rising Newcomer
4 months ago

FC26 PC Crash – Anti-Cheat Invalid Pointer Read (c0000005, movntdqa)

System: PC – AMD Ryzen 7 2700X, MSI B450 Gaming Plus (latest BIOS), 16 GB Corsair Vengeance LPX RAM at 2666 MHz (1x16GB), NVIDIA GPU driver 552.22, Windows 11 Pro 10.0.26200 x64. Reproducibility: Occurs consistently during normal gameplay with no mods, on average 3–4 times per day, minimum twice, tied to engine AI and anti-cheat routines. Description: During gameplay FC26 crashes to desktop with no visible error. WinDbg analysis shows an access violation inside the anti-cheat virtualization routine ANTICHEAT_VIRTUALIZE_CODEMARKER_SHIELD while executing an SSE instruction movntdqa on an invalid memory pointer. Technical details: Exception code c0000005 (read), faulting instruction movntdqa xmm0, xmmword ptr [r8], faulting module FC26!ANTICHEAT_VIRTUALIZE_CODEMARKER_SHIELD+0x230e53, invalid pointer r8=0x412d5813f0. Stack includes ANTICHEAT_VIRTUALIZE_CODEMARKER_SHIELD followed by SoftMaxNormalize indicating AI computation affected by anti-cheat. Registers show deterministic invalid pointer access. Minidump and ecxr context are attached. Observations: Crash occurs inside anti-cheat memory virtualization, not GPU drivers or user code, and is independent of overclocking or RAM instability. Request: Please investigate anti-cheat memory virtualization causing invalid pointer access and crashing legitimate players, particularly when interacting with AI SoftMax routines.

anticheat
crashing
pc

2 Comments

  • amarosv's avatar
    amarosv
    Seasoned Traveler
    17 days ago

    Hey, did you manage to fix it? I am having the same issue

  • amarosv's avatar
    amarosv
    Seasoned Traveler
    15 days ago

    JohnnyCars​ I FINALLY FIXED IT. I found a workaround for the startup crash after EA AntiCheat.

    Full credit for the solution goes to this post:
    EA FC 26 - Problema com Anti Cheat - não abre o jogo | EA Forums - 13019493

    IMPORTANT:
    Before doing anything, make a backup of your original folder (for example by renaming it to "EA SPORTS FC 26 - old"), since it contains your careers, profiles, settings, etc.

    The solution is to copy the folder:

    C:\Users<user>\AppData\Local\EA SPORTS FC 26

    from a friend whose game launches correctly.

    If you don’t know anyone who can share the folder, you can use this one:
    https://drive.proton.me/urls/B0X4MBBZB4#BBUyKm4ZyVpZ

    Steps:

    1. Backup your original folder.
    2. Copy the working folder into:
      C:\Users<user>\AppData\Local\
    3. Launch the game.
    4. If EA App asks to repair the game, you can safely do it.
    5. Once the game launches correctly, close it.
    6. Copy back your original folder to recover your careers, profiles, settings, etc.

    In my case this completely fixed the issue after days of trying:

    • Windows reinstalls,
    • multiple PCs,
    • AntiCheat,
    • drivers,
    • BIOS,
    • Amazon Luna, etc.