1. Do you need support for Assetto Corsa Competizione? Please use the proper forum below and ALWAYS zip and attach the WHOLE "Logs" folder in your c:\users\*youruser*\AppData\Local\AC2\Saved. The "AppData" folder is hidden by default, check "Hidden items" in your Windows view properties. If you report a crash, ALWAYS zip and attach the WHOLE "Crashes" folder in the same directory. Do not post "I have the same issue" in an existing thread with a game crash, always open your own thread. Do not PM developers and staff members for personal troubleshooting and support.
  2. As part of our continuous maintenance and improvements to Assetto Corsa Competizione we will be releasing small updates on a regular basis during the esports season which might not go through the usual announcement process detailing the changes until a later version update where these changes will be listed retrospectively.
  3. If ACC doesn't start with an error or the executable is missing, please add your entire Steam directory to the exceptions in your antivirus software, run a Steam integrity check or reinstall the game altogether. Make sure you add the User/Documents/Assetto Corsa Competizione folder to your antivirus/Defender exceptions and exclude it from any file sharing app (GDrive, OneDrive or Dropbox)! The Corsair iCue software is also known to conflict with Input Device initialization, if the game does not start up and you have such devices, please try disabling the iCue software and try again. [file:unknown] [line: 95] secure crt: invalid error is a sign of antivirus interference, while [Pak chunk signing mismatch on chunk] indicates a corrupted installation that requires game file verification.
  4. When reporting an issue with saved games, please always zip and attach your entire User/Documents/Assetto Corsa Competizione/Savegame folder, along with the logs and the crash folder (when reporting related to a crash).
ACC general support Note about silent updates Startup troubleshooting ACC savegame reports

ACC Troubleshooting

Please report here crashes and general issues

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  1. pankykapus
    Locked Sticky

    READ HERE How to Use the Support Forums and Report Issues

    pankykapus, Sep 12, 2018
    Replies:
    1
    Views:
    31,425
    pankykapus
    pankykapus
    Jan 3, 2021
  2. AC Support
    Locked Sticky

    This thread, started by AC Support, has been deleted. Deleted by AC Support, Nov 28, 2021, Reason: No longer valid.
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  3. paulieGTR
    Locked Sticky

    Before Posting - Read the FAQs and Use Search Function

    paulieGTR, Nov 10, 2013
    Replies:
    1
    Views:
    84,357
    Tiago Fortuna
    Tiago Fortuna
    Nov 12, 2013
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  1. M_Griso

    SOFTWARE/HARDWARE ISSUE acc crash at start up [userdocs/config folder permissions / antivirus software exception]

    M_Griso, Jun 6, 2021
    Replies:
    8
    Views:
    210
    M_Griso
    M_Griso
    Jun 28, 2021
  2. Leon Wolters

    SOFTWARE/HARDWARE ISSUE ACC Fatal Error File Unknown Line 1214

    Leon Wolters, Jul 2, 2022
    Replies:
    11
    Views:
    208
    Wolkenwolf
    Wolkenwolf
    Jul 7, 2022
  3. Mike Bull

    SOFTWARE/HARDWARE ISSUE ACC Crashing when online with fatal error [audio device]

    Mike Bull, Jun 29, 2022
    Replies:
    8
    Views:
    207
    Krampus1313
    Krampus1313
    Feb 2, 2024
  4. ahenrywork

    SOFTWARE/HARDWARE ISSUE Challenger Pack Not Loading - Other DLC Works [cached Steam response]

    ahenrywork, Aug 29, 2022
    Replies:
    11
    Views:
    205
    Felix Gerstmann
    Felix Gerstmann
    Oct 20, 2022
  5. Philip Antonia

    SOFTWARE/HARDWARE ISSUE ACC crashing/freezing pc

    Philip Antonia, Sep 14, 2018
    Replies:
    9
    Views:
    204
    PiHeich
    PiHeich
    Sep 17, 2018
  6. gqren

    SOFTWARE/HARDWARE ISSUE [1.8.10]UE4-AC2 crash - several game crashes & "instant" reboot [general system instability]

    gqren, Jan 22, 2022
    Replies:
    11
    Views:
    201
    gqren
    gqren
    Feb 25, 2022
  7. Alfa90_Buttje

    SOFTWARE/HARDWARE ISSUE ACC Freezes after race/stint [hard drive sleep mode]

    Alfa90_Buttje, Sep 18, 2020
    Replies:
    19
    Views:
    200
    Alfa90_Buttje
    Alfa90_Buttje
    Dec 16, 2020
  8. Axel Vogelsang

    SOFTWARE/HARDWARE ISSUE Fatal error

    Axel Vogelsang, Nov 30, 2021
    Replies:
    3
    Views:
    198
    xaotik
    xaotik
    Dec 3, 2021
  9. Daniel Stephenson

    SOFTWARE/HARDWARE ISSUE UE4-AC2 Fatal Error [Couple minutes into race] (FIXED)

    Daniel Stephenson, Jan 27, 2021
    Replies:
    1
    Views:
    197
    Daniel Stephenson
    Daniel Stephenson
    Jan 30, 2021
  10. FeroBlac

    SOFTWARE/HARDWARE ISSUE I have tried every solution listed back to 2019, ACC UE4 Fatal Error

    FeroBlac, Mar 18, 2023
    Replies:
    2
    Views:
    197
    Olduvai
    Olduvai
    Apr 2, 2023
  11. S Hughes

    SOFTWARE/HARDWARE ISSUE UE4-AC2 Game Crash - D3D11Viewport.cpp:428 [Fanatec driver memory leak]

    S Hughes, Feb 19, 2022
    Replies:
    6
    Views:
    194
    xaotik
    xaotik
    Apr 5, 2022
  12. Mario Teixeira

    SOFTWARE/HARDWARE ISSUE The UE4-AC2 Game has crashed and will close, text: Fatal error! [OneDrive]

    Mario Teixeira, Feb 15, 2022
    Replies:
    6
    Views:
    193
    Mario Teixeira
    Mario Teixeira
    Feb 18, 2022
  13. Karmik

    SOFTWARE/HARDWARE ISSUE Crashing on load - The UE4-AC2 Game has crashed...

    Karmik, Feb 8, 2023
    Replies:
    1
    Views:
    191
    Karmik
    Karmik
    Feb 8, 2023
  14. Jeremy Toste

    SOFTWARE/HARDWARE ISSUE Not Responding/black screen on Startup, no error [Corsair iCue compatibility]

    Jeremy Toste, Dec 23, 2021
    Replies:
    19
    Views:
    190
    pankykapus
    pankykapus
    Dec 24, 2021
  15. stefanodaidai

    SOFTWARE/HARDWARE ISSUE game crash fatal error [general system instability]

    stefanodaidai, Feb 18, 2021
    Replies:
    10
    Views:
    189
    stefanodaidai
    stefanodaidai
    Mar 6, 2021
  16. yahoo

    SOFTWARE/HARDWARE ISSUE Fatal UE4-AC2 Error - Game won't start [Audi device/driver]

    yahoo, Nov 8, 2022
    Replies:
    2
    Views:
    188
    Manc
    Manc
    Dec 31, 2022
  17. Salsa1407

    SOFTWARE/HARDWARE ISSUE UE4-AC2 Game has crashed "Fatal error! [DI device init - RESOLVED by Thrustmaster driver reinstall]

    Salsa1407, Nov 19, 2020
    Replies:
    5
    Views:
    188
    Salsa1407
    Salsa1407
    Nov 23, 2020
  18. MikeP2706

    SOFTWARE/HARDWARE ISSUE Crashes on launch since 1.5 [corrupted .pak file]

    MikeP2706, Jul 24, 2020
    Replies:
    9
    Views:
    187
    MikeP2706
    MikeP2706
    Sep 26, 2020
  19. MonacoBMW

    SOFTWARE/HARDWARE ISSUE Why does my game keep crashing mid race? [Fanatec driver memory leak]

    MonacoBMW, Sep 1, 2022
    Replies:
    7
    Views:
    187
    MonacoBMW
    MonacoBMW
    Nov 10, 2022
  20. Captain W

    SOFTWARE/HARDWARE ISSUE Loosing FFB Since Hotfix [USB hub problem]

    Captain W, May 10, 2020
    Replies:
    7
    Views:
    186
    Captain W
    Captain W
    May 16, 2020
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