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

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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 Deleted by AC Support, Nov 28, 2021, Reason: No longer valid.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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  4. cris

    DISCUSSION Tyre wear

    cris, Jun 3, 2019
    Replies:
    7
    Views:
    191
    Oblit0r
    Oblit0r
    Jun 4, 2019
  5. eRacer212

    DISCUSSION Real top speed at Paul Ricard

    eRacer212, Jun 3, 2019 ... 2
    Replies:
    24
    Views:
    607
    Mitja Bonca
    Mitja Bonca
    Jun 5, 2019
  6. SimGuy_1

    DISCUSSION If it weren't for BOP.

    SimGuy_1, Jun 5, 2019 ... 2
    Replies:
    20
    Views:
    504
    SimGuy_1
    SimGuy_1
    Jun 7, 2019
  7. Mach77

    DISCUSSION Tyre overheating questions for setup

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

    DISCUSSION Tyre deformation. Thanks Kunos!

    Dafunkdp, Jun 9, 2019
    Replies:
    1
    Views:
    229
    Thx1137
    Thx1137
    Jun 9, 2019
  9. Chris der Boss

    DISCUSSION Are slicks too good in wet conditions?

    Chris der Boss, Jun 6, 2019
    Replies:
    6
    Views:
    342
    m_box97
    m_box97
    Jun 11, 2019
  10. cris

    DISCUSSION Brake bias

    cris, Jun 12, 2019
    Replies:
    3
    Views:
    193
    alienillusions
    alienillusions
    Jun 12, 2019
  11. Salvatore Amato

    DISCUSSION Are engine damages implemented?

    Salvatore Amato, Jun 12, 2019
    Replies:
    2
    Views:
    271
    Salvatore Amato
    Salvatore Amato
    Jun 12, 2019
  12. Axel Vogelsang

    DISCUSSION Group National pace at Spa

    Axel Vogelsang, Jun 15, 2019
    Replies:
    3
    Views:
    67
    nfsw55
    nfsw55
    Jun 15, 2019
  13. nkohout

    DISCUSSION AMG Splitter Setting: What's actually changing on the car?

    nkohout, Jun 15, 2019
    Replies:
    0
    Views:
    122
    nkohout
    nkohout
    Jun 15, 2019
  14. arkoudadis

    DISCUSSION Setups and Setup screen

    arkoudadis, Jun 15, 2019
    Replies:
    1
    Views:
    129
    Baikal
    Baikal
    Jun 16, 2019
  15. cjhill44

    DISCUSSION Same handling issues with every car

    cjhill44, Jun 8, 2019 ... 2
    Replies:
    38
    Views:
    1,428
    LeDude83
    LeDude83
    Jun 21, 2019
  16. earlyapex

    DISCUSSION [1.0.4] Wind direction effect on drag

    earlyapex, Jun 24, 2019
    Replies:
    19
    Views:
    269
    Coanda
    Coanda
    Jun 25, 2019
  17. Napo24

    DISCUSSION Guide: Perfect RPM for Upshifts

    Napo24, Apr 10, 2019 ... 2 3
    Replies:
    47
    Views:
    3,963
    Marlborofranz
    Marlborofranz
    Jul 21, 2019
  18. iVG

    DISCUSSION Kemmel straight (Spa) puddle

    iVG, Jul 20, 2019 ... 2
    Replies:
    36
    Views:
    1,071
    baboon
    baboon
    Jul 22, 2019
  19. BBernes

    DISCUSSION How do we know what wheel rotation to set ?

    BBernes, Jun 9, 2019 ... 2
    Replies:
    33
    Views:
    1,241
    Seelenkrank
    Seelenkrank
    Jul 25, 2019
  20. Strummer

    DISCUSSION Is there any love for the McLaren?

    Strummer, Jul 31, 2019 ... 2
    Replies:
    20
    Views:
    817
    Gevatter
    Gevatter
    Jul 31, 2019
  21. Sba

    DISCUSSION Brake warmup

    Sba, Jul 28, 2019 ... 2
    Replies:
    23
    Views:
    863
    After_Midnight
    After_Midnight
    Aug 1, 2019
  22. SteelyEyedMissleMan

    DISCUSSION Complete shared memory / UDP API

    SteelyEyedMissleMan, Aug 4, 2018 ... 2
    Replies:
    25
    Views:
    3,501
    AvedisZildjian
    AvedisZildjian
    Aug 3, 2019
  23. Timberwind

    DISCUSSION Ferrari 488 Launch Control - How does it work?

    Timberwind, Jul 24, 2019
    Replies:
    6
    Views:
    597
    rikirk
    rikirk
    Aug 4, 2019
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