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
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    READ HERE How to Use the Support Forums and Report Issues

    pankykapus, Sep 12, 2018
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    pankykapus
    pankykapus
    Jan 3, 2021
  2. AC Support
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    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
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    84,395
    Tiago Fortuna
    Tiago Fortuna
    Nov 12, 2013
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  2. pankykapus
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    CRITICAL IMPORTANT: editing engine settings and unwanted results

    pankykapus, Dec 10, 2020
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    pankykapus
    pankykapus
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  4. rpm

    CRITICAL Netcode glitching

    rpm, Apr 4, 2024
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    rpm
    rpm
    Apr 4, 2024
  5. RearNKD

    CRITICAL ACC fatal error

    RearNKD, Nov 25, 2023
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    RearNKD
    RearNKD
    Nov 25, 2023
  6. NoName 3

    CRITICAL line 95

    NoName 3, Nov 22, 2023
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    55
    NoName 3
    NoName 3
    Nov 22, 2023
  7. Seven Sam

    CRITICAL ACC CRASH During playing SOLO

    Seven Sam, Oct 12, 2023
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    Seven Sam
    Seven Sam
    Oct 12, 2023
  8. Evil_Hannibal

    CRITICAL Weird connection issue with Server browser

    Evil_Hannibal, Jun 7, 2023
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    56
    Evil_Hannibal
    Evil_Hannibal
    Jun 7, 2023
  9. GBratsos

    CRITICAL Unreal Engine Error ACC 1.9.2

    GBratsos, May 6, 2023
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    133
    GBratsos
    GBratsos
    May 6, 2023
  10. Fernando

    CRITICAL UE4 Fatal Error 1.9

    Fernando, Apr 29, 2023
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    Fernando
    Fernando
    Apr 29, 2023
  11. Rolls Royce

    CRITICAL writes to me Access to the path and is dened who can help my

    Rolls Royce, Apr 28, 2023
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    43
    Rolls Royce
    Rolls Royce
    Apr 28, 2023
  12. FireWox

    CRITICAL fatal Error opening game online server

    FireWox, Apr 14, 2023
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    FireWox
    FireWox
    Apr 14, 2023
  13. Noisen

    CRITICAL Acc Crashes

    Noisen, Apr 13, 2023
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    63
    Noisen
    Noisen
    Apr 13, 2023
  14. Elcloudy

    CRITICAL ACC Fatal Error Crashes in League races.

    Elcloudy, Mar 29, 2023
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    Elcloudy
    Elcloudy
    Mar 29, 2023
  15. MIE_RACING

    CRITICAL School eSports league computers cannot connect to MP Servers

    MIE_RACING, Mar 18, 2023
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    24
    MIE_RACING
    MIE_RACING
    Mar 18, 2023
  16. Stains

    CRITICAL Fatal error with open composite

    Stains, Mar 13, 2023
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    Views:
    41
    Stains
    Stains
    Mar 13, 2023
  17. deni80s

    CRITICAL Fatal Eror

    deni80s, Mar 7, 2023
    Replies:
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    58
    deni80s
    deni80s
    Mar 7, 2023
  18. killua

    CRITICAL ACC freeze when click continue after the first career race

    killua, Mar 4, 2023
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    26
    killua
    killua
    Mar 4, 2023
  19. Syriker

    CRITICAL ACC stuck not loading singleplayer race or online

    Syriker, Feb 1, 2023
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    22
    Syriker
    Syriker
    Feb 1, 2023
  20. Nikitin Sergey

    CRITICAL UE4-AC2 - Fatal error! In the middle of the practice / RTX4090

    Nikitin Sergey, Jan 31, 2023
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    142
    Nikitin Sergey
    Nikitin Sergey
    Jan 31, 2023
  21. Pirelike

    CRITICAL ACC Crashes without any error message

    Pirelike, Jan 30, 2023
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    Views:
    60
    Pirelike
    Pirelike
    Jan 30, 2023
  22. Krassmus

    CRITICAL Fatal Error after saving replay - League race...

    Krassmus, Nov 7, 2022
    Replies:
    0
    Views:
    15
    Krassmus
    Krassmus
    Nov 7, 2022
  23. boob1tch

    CRITICAL Game crashing with "Fatal error" only in multiplayer - UDP Paket not read to the end

    boob1tch, Nov 1, 2022
    Replies:
    0
    Views:
    46
    boob1tch
    boob1tch
    Nov 1, 2022
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