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:
    31,774
    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 Deleted by AC Support, Nov 28, 2021, Reason: No longer valid.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:
    84,556
    Tiago Fortuna
    Tiago Fortuna
    Nov 12, 2013
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CRITICAL WORKAROUND BUG ISSUE
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  1. Silicchilicchi

    BUG AI too strong after a save v1.0.10

    Silicchilicchi, Sep 26, 2019
    Replies:
    4
    Views:
    137
    Silicchilicchi
    Silicchilicchi
    Oct 3, 2019
  2. Big_Racer

    BUG 911 Cup Bump Rebound Switched at front axis

    Big_Racer, May 19, 2020
    Replies:
    1
    Views:
    137
    Artworx
    Artworx
    Aug 17, 2020
  3. Infectonator

    BUG Pad Wear and Disk Wear not reseting

    Infectonator, Feb 20, 2020
    Replies:
    5
    Views:
    144
    Oblit0r
    Oblit0r
    Feb 20, 2020
  4. Filip Novák

    BUG Weird bug

    Filip Novák, Aug 28, 2023
    Replies:
    1
    Views:
    147
    AlleyViper
    AlleyViper
    Aug 29, 2023
  5. Leclettico

    BUG Car AI thrown away

    Leclettico, Dec 21, 2018
    Replies:
    3
    Views:
    154
    Rehooja
    Rehooja
    Jan 22, 2019
  6. cookie_mnstr

    BUG M4 GT4 failing to lock out downshifts; causing over-rev

    cookie_mnstr, Sep 16, 2020
    Replies:
    1
    Views:
    162
    LATE4APEX
    LATE4APEX
    Sep 16, 2020
  7. AngryRussian

    BUG 911 silverstone bug

    AngryRussian, Nov 9, 2019
    Replies:
    1
    Views:
    162
    earlyapex
    earlyapex
    Nov 9, 2019
  8. Claponi

    BUG Strange behavior Silverstone off-track

    Claponi, Aug 22, 2021
    Replies:
    3
    Views:
    167
    Dewald Nel
    Dewald Nel
    Aug 28, 2021
  9. A.K.Racing

    BUG Nurbugring FFB texture is missing!

    A.K.Racing, Jul 25, 2019
    Replies:
    0
    Views:
    183
    A.K.Racing
    A.K.Racing
    Jul 25, 2019
  10. Gopher04

    BUG Monster GT's

    Gopher04, Jul 2, 2019
    Replies:
    7
    Views:
    190
    dek
    dek
    Jul 3, 2019
  11. Paul Sutton

    BUG Collision detection box failure

    Paul Sutton, Jan 10, 2019
    Replies:
    4
    Views:
    194
    fabT
    fabT
    Jan 14, 2019
  12. unknwn

    BUG Inconsistent tire pressures in setup menu

    unknwn, Sep 15, 2018
    Replies:
    4
    Views:
    195
    Roberto Olivetti
    Roberto Olivetti
    Sep 15, 2018
  13. Coanda

    BUG [1.3.11] A.i. comes to a grinding halt..

    Coanda, Apr 22, 2020
    Replies:
    3
    Views:
    197
    Vision_Slayer_525
    Vision_Slayer_525
    Jun 15, 2020
  14. Sensei

    BUG NSX at Superpole #54 strange setup behavior

    Sensei, Feb 24, 2020
    Replies:
    8
    Views:
    197
    Infectonator
    Infectonator
    Feb 26, 2020
  15. |BAD| DavE

    BUG Steering angle broken

    |BAD| DavE, Apr 17, 2020
    Replies:
    1
    Views:
    198
    |BAD| DavE
    |BAD| DavE
    Apr 20, 2020
  16. mario11

    BUG Audi R8 Evo anti stall bug?

    mario11, Mar 6, 2020
    Replies:
    6
    Views:
    204
    mario11
    mario11
    Mar 7, 2020
  17. Cucumber_86

    BUG Porsche ECU map 4 - wrong fuel burn

    Cucumber_86, Feb 20, 2020
    Replies:
    0
    Views:
    205
    Cucumber_86
    Cucumber_86
    Feb 20, 2020
  18. Richard Dastardly

    BUG AMG GT3 Fuel map is backwards

    Richard Dastardly, Aug 22, 2020
    Replies:
    3
    Views:
    209
    Oblit0r
    Oblit0r
    Aug 22, 2020
  19. earlyapex

    BUG [1.0.10]Loaded setups gives a crabbing car

    earlyapex, Sep 30, 2019
    Replies:
    3
    Views:
    211
    VIVO E UM LIXO
    VIVO E UM LIXO
    Oct 27, 2019
  20. Furia | DanCauS

    BUG ferrari losing ffb

    Furia | DanCauS, Feb 8, 2020
    Replies:
    8
    Views:
    213
    Furia | DanCauS
    Furia | DanCauS
    Feb 14, 2020
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