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 Physics

Bugs and issues about physics

Announcement Title Start Date
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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:
    31,647
    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 Deleted by AC Support, Nov 28, 2021, Reason: No longer valid.
    View
  3. paulieGTR
    Locked Sticky

    Before Posting - Read the FAQs and Use Search Function

    paulieGTR, Nov 10, 2013
    Replies:
    1
    Views:
    84,476
    Tiago Fortuna
    Tiago Fortuna
    Nov 12, 2013
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CRITICAL WORKAROUND BUG ISSUE
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  2. Tom Shane
    Sticky Redirect

    DISCUSSION Simsource: Setup Comparison Tool, Leaderboards, Server Results Viewer & Stats Tracker

    Tom Shane, Aug 9, 2019 ... 5 6 7
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  3.   » Normal Threads
  4. LotusRacer

    DISCUSSION [1.3.2] Controls locked after loading setup before AI race?

    LotusRacer, Feb 12, 2020
    Replies:
    0
    Views:
    15
    LotusRacer
    LotusRacer
    Feb 12, 2020
  5. earlyapex

    DISCUSSION [1.0.4] Wind direction effect on drag

    earlyapex, Jun 24, 2019
    Replies:
    19
    Views:
    269
    Coanda
    Coanda
    Jun 25, 2019
  6. Elrann

    DISCUSSION Zero difference in max speed with max/min aero

    Elrann, Aug 11, 2020
    Replies:
    13
    Views:
    480
    bhowe83
    bhowe83
    Aug 13, 2020
  7. Boonatix

    DISCUSSION Workshop Guide - Setting up a GT 4 car on your own

    Boonatix, Sep 11, 2020
    Replies:
    18
    Views:
    525
    SimGuy_1
    SimGuy_1
    Sep 13, 2020
  8. John Dalton

    DISCUSSION What Porsche 992 GT3 Cup Version is in-game?

    John Dalton, Mar 26, 2022
    Replies:
    4
    Views:
    200
    ricxx
    ricxx
    Mar 28, 2022
  9. Richie Speed

    DISCUSSION Wet racing line

    Richie Speed, Jan 8, 2020
    Replies:
    18
    Views:
    712
    Mitja Bonca
    Mitja Bonca
    Nov 25, 2021
  10. nrc689

    DISCUSSION Wet race and tyres

    nrc689, Feb 8, 2020
    Replies:
    6
    Views:
    137
    LotusRacer
    LotusRacer
    Feb 11, 2020
  11. Dufloth

    DISCUSSION Weird tire pressure

    Dufloth, Aug 21, 2021
    Replies:
    6
    Views:
    193
    Oblit0r
    Oblit0r
    Aug 23, 2021
  12. michael_havlena

    DISCUSSION Using Stability control? when and why?

    michael_havlena, Jul 24, 2020
    Replies:
    3
    Views:
    331
    Salvatore Amato
    Salvatore Amato
    Jul 24, 2020
  13. cris

    DISCUSSION Tyre wear

    cris, Jun 3, 2019
    Replies:
    7
    Views:
    191
    Oblit0r
    Oblit0r
    Jun 4, 2019
  14. Ale Robles

    DISCUSSION Tyre temperatures, dry and wet

    Ale Robles, Apr 20, 2020
    Replies:
    2
    Views:
    221
    Ale Robles
    Ale Robles
    Apr 20, 2020
  15. DrMabuse1963

    DISCUSSION Tyre Temp GT4

    DrMabuse1963, Jul 15, 2020
    Replies:
    6
    Views:
    397
    DrMabuse1963
    DrMabuse1963
    Jul 17, 2020
  16. Vette_66

    DISCUSSION Tyre Set Numbers

    Vette_66, Feb 3, 2021
    Replies:
    5
    Views:
    256
    azzah
    azzah
    Apr 18, 2021
  17. Mach77

    DISCUSSION Tyre overheating questions for setup

    Mach77, Jun 7, 2019
    Replies:
    6
    Views:
    215
    Mach77
    Mach77
    Jun 8, 2019
  18. AssettoJJJ

    DISCUSSION Tyre model slip curves

    AssettoJJJ, Dec 13, 2020
    Replies:
    1
    Views:
    181
    sps_for_race
    sps_for_race
    Dec 13, 2020
  19. Dafunkdp

    DISCUSSION Tyre deformation. Thanks Kunos!

    Dafunkdp, Jun 9, 2019
    Replies:
    1
    Views:
    229
    Thx1137
    Thx1137
    Jun 9, 2019
  20. SimGuy_1

    DISCUSSION Tyre behaviour discussion.

    SimGuy_1, Aug 31, 2020
    Replies:
    4
    Views:
    315
    SimGuy_1
    SimGuy_1
    Sep 1, 2020
  21. DecoySA

    DISCUSSION Turning a Quali set into a race set

    DecoySA, Nov 15, 2020
    Replies:
    1
    Views:
    104
    AndyK70
    AndyK70
    Nov 16, 2020
  22. bhamx2

    DISCUSSION Traction Control and Steering Lock

    bhamx2, Mar 19, 2021
    Replies:
    6
    Views:
    188
    LATE4APEX
    LATE4APEX
    Mar 22, 2021
  23. usingG29

    DISCUSSION Torsen vs clutch type differential ingame

    usingG29, May 5, 2021
    Replies:
    8
    Views:
    267
    Clivew
    Clivew
    May 10, 2021
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