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. 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).
  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.
ACC general support ACC savegame reports Startup troubleshooting

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:
    26,983
    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 Deleted by AC Support, Nov 28, 2021, Reason: No longer valid.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:
    81,474
    Tiago Fortuna
    Tiago Fortuna
    Nov 12, 2013
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WORKAROUND BUG ISSUE CRITICAL
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  1.   » Sticky Threads
  2. pankykapus
    Locked Sticky

    CRITICAL IMPORTANT: editing engine settings and unwanted results

    pankykapus, Dec 10, 2020
    Replies:
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    2,073
    pankykapus
    pankykapus
    Dec 10, 2020
  3.   » Normal Threads
  4. Jozsusz1

    CRITICAL This game is unplayable, crashes every time

    Jozsusz1, Jun 27, 2019 ... 2 3 4
    Replies:
    67
    Views:
    1,716
    pigsy
    pigsy
    Jul 13, 2019
  5. Madsen

    CRITICAL AC2 freeze and crash

    Madsen, Sep 13, 2019 ... 2 3
    Replies:
    57
    Views:
    1,352
    GONKO
    GONKO
    May 14, 2020
  6. ..LeRenard!

    CRITICAL Application won't launch: "The UE4-AC2 Game crahsed and will close"

    ..LeRenard!, Jun 10, 2019 ... 2 3
    Replies:
    52
    Views:
    1,008
    Fábio Luiz Coelho Bonoldi
    Fábio Luiz Coelho Bonoldi
    Jun 30, 2019
  7. sps_for_race

    CRITICAL [1.0.10] every 3 Seconds picture freezes, SP, Quick Race, logs attached

    sps_for_race, Sep 16, 2019 ... 2 3
    Replies:
    44
    Views:
    1,113
    sps_for_race
    sps_for_race
    Nov 2, 2019
  8. Salvatore Amato

    CRITICAL 1.3.10 performance issues

    Salvatore Amato, Apr 15, 2020 ... 2
    Replies:
    38
    Views:
    1,371
    rafael.placce
    rafael.placce
    Apr 19, 2020
  9. RayGun

    CRITICAL CPU running extremely hot

    RayGun, May 6, 2020 ... 2
    Replies:
    36
    Views:
    488
    vortex19
    vortex19
    May 10, 2020
  10. zzjorzz

    CRITICAL Sudden microstutters

    zzjorzz, Nov 18, 2019 ... 2
    Replies:
    31
    Views:
    939
    Flavus
    Flavus
    Dec 8, 2019
  11. Goaqi

    CRITICAL Unreal Engine is exiting due to D3D device being lost.

    Goaqi, May 3, 2020 ... 2
    Replies:
    30
    Views:
    394
    GONKO
    GONKO
    May 13, 2020
  12. glock2004

    CRITICAL Savegame files are huge and loading takes ages

    glock2004, Mar 24, 2020 ... 2
    Replies:
    30
    Views:
    279
    Neilski
    Neilski
    Mar 25, 2020
  13. SimRacer925

    CRITICAL V.1.0.0 - MASSIVE FPS Hit

    SimRacer925, May 29, 2019 ... 2
    Replies:
    27
    Views:
    1,220
    F1Aussie
    F1Aussie
    May 30, 2019
  14. cey

    CRITICAL Game won't start

    cey, Sep 12, 2018 ... 2
    Replies:
    26
    Views:
    733
    Astidien
    Astidien
    Sep 30, 2018
  15. Kyle Brocke

    CRITICAL Fatal Error Crashes in Game at random.

    Kyle Brocke, Jul 13, 2022 ... 2
    Replies:
    22
    Views:
    217
    Kyle Brocke
    Kyle Brocke
    Jul 14, 2022
  16. crydex
    Locked

    CRITICAL Stupidest and most unfinished game I've ever played.

    crydex, Apr 25, 2020 ... 2
    Replies:
    22
    Views:
    620
    Phildonn
    Phildonn
    Apr 26, 2020
  17. Dakota2763

    CRITICAL Assetto Corsa Competizione Crashes-in Steam

    Dakota2763, Sep 29, 2019 ... 2
    Replies:
    22
    Views:
    449
    MrPeaski
    MrPeaski
    Oct 22, 2019
  18. Tobiman

    CRITICAL Game crashes on startup, Everytime, after update

    Tobiman, May 23, 2020 ... 2
    Replies:
    21
    Views:
    442
    luke74
    luke74
    Jul 19, 2020
  19. taccoamoore29

    CRITICAL Bad pauses every few seconds

    taccoamoore29, Jun 10, 2020 ... 2
    Replies:
    21
    Views:
    226
    taccoamoore29
    taccoamoore29
    Jun 11, 2020
  20. JackTT

    CRITICAL Unplayable game for me

    JackTT, Jul 7, 2019 ... 2
    Replies:
    20
    Views:
    409
    LeDude83
    LeDude83
    Jul 8, 2019
  21. Rabbitsensei

    CRITICAL Constant High Cpu Load which results in micro freezes

    Rabbitsensei, Jan 9, 2020
    Replies:
    19
    Views:
    662
    Rabbitsensei
    Rabbitsensei
    Apr 14, 2020
  22. joesphvaccaro

    CRITICAL Game crash

    joesphvaccaro, Apr 12, 2020
    Replies:
    19
    Views:
    152
    joesphvaccaro
    joesphvaccaro
    Apr 13, 2020
  23. up2nogood

    CRITICAL an unreal process has crashed: UE4-AC2

    up2nogood, May 31, 2020
    Replies:
    18
    Views:
    465
    draughan
    draughan
    Oct 16, 2020
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