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

Physics Bugs & Issues

Discussions related to physics issues and feedback

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:
    31,422
    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:
    84,356
    Tiago Fortuna
    Tiago Fortuna
    Nov 12, 2013
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WORKAROUND CRITICAL BUG ISSUE
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  1. SunBro

    BUG Praga R1 Annoying Oscillation with G27

    SunBro, Sep 4, 2016 ... 2 3
    Replies:
    53
    Views:
    787
    Nahkamarakatti
    Nahkamarakatti
    Sep 10, 2016
  2. Monsieur_Whippy

    BUG DSG gearbox issues, no throttle cut, and inappropriate throttle cut

    Monsieur_Whippy, Dec 9, 2013 ... 2 3
    Replies:
    47
    Views:
    1,637
    Monsieur_Whippy
    Monsieur_Whippy
    Apr 13, 2015
  3. FALK

    BUG Ki frustration (career)

    FALK, Dec 28, 2015 ... 2 3
    Replies:
    45
    Views:
    801
    Andrex
    Andrex
    Jan 14, 2016
  4. alex72

    BUG Mclaren GT3 - 2 problems

    alex72, Feb 21, 2014 ... 2
    Replies:
    38
    Views:
    1,173
    AugGust
    AugGust
    May 23, 2014
  5. Albert McSaltens

    BUG Fuel prediction un fuel tab wrong

    Albert McSaltens, Oct 17, 2014 ... 2
    Replies:
    34
    Views:
    623
    earlyapex
    earlyapex
    Jan 14, 2015
  6. TheBoss

    BUG Malfunction of suspension curbs Silverstone

    TheBoss, Jun 13, 2014 ... 2
    Replies:
    28
    Views:
    1,421
    Albert McSaltens
    Albert McSaltens
    Jul 17, 2014
  7. neodymium

    BUG Bug in the start line...

    neodymium, Jan 18, 2014 ... 2
    Replies:
    28
    Views:
    495
    AC Support
    AC Support
    Feb 3, 2014
  8. GRFOCO

    BUG Steer ratio 1:1 mismatch

    GRFOCO, Oct 20, 2014 ... 2
    Replies:
    27
    Views:
    764
    PuffTheMagicBelgian
    PuffTheMagicBelgian
    Sep 3, 2015
  9. LuckyMic

    BUG Mclaren p1 without tc not possible to slide?!

    LuckyMic, Apr 10, 2015 ... 2
    Replies:
    21
    Views:
    393
    Kristaps
    Kristaps
    Apr 10, 2015
  10. pales.

    BUG AI Inconsistencies (Fuel)

    pales., May 28, 2017 ... 2
    Replies:
    20
    Views:
    520
    Esotic
    Esotic
    Oct 18, 2017
  11. mannitom77

    BUG Collision issues with kerb

    mannitom77, Jan 18, 2014 ... 2
    Replies:
    20
    Views:
    290
    klieberung
    klieberung
    Jan 20, 2014
  12. SeriousSpy

    BUG Ai don't like spa very much.

    SeriousSpy, Oct 16, 2014
    Replies:
    19
    Views:
    616
    john oliver
    john oliver
    Oct 30, 2014
  13. TDS

    BUG Lotus 98T final speed

    TDS, Apr 4, 2016
    Replies:
    18
    Views:
    399
    Rygar
    Rygar
    Apr 11, 2016
  14. 0wnaGe

    BUG Bmw e30 dtm suspension behaviour

    0wnaGe, Nov 25, 2014
    Replies:
    18
    Views:
    455
    Ben Lee
    Ben Lee
    Dec 6, 2015
  15. Prince Magnus

    BUG MP4 12C max rev when downshifting

    Prince Magnus, Dec 7, 2013
    Replies:
    18
    Views:
    465
    Monsieur_Whippy
    Monsieur_Whippy
    Dec 19, 2013
  16. martcerv

    BUG BMW E30 stock rear very loose on coast now

    martcerv, Jun 29, 2016
    Replies:
    16
    Views:
    332
    martcerv
    martcerv
    Jul 8, 2016
  17. M346ZCP

    BUG ABS works when not applying brake

    M346ZCP, Nov 13, 2013
    Replies:
    16
    Views:
    439
    AC Support
    AC Support
    Nov 14, 2013
  18. Deleted member 18758

    BUG BMW 1M Engine Damage

    Deleted member 18758, Mar 24, 2014
    Replies:
    15
    Views:
    457
    Leonardo Ratafia
    Leonardo Ratafia
    Nov 28, 2016
  19. Luis Branco

    BUG Porsche Carrera S Suspension Values

    Luis Branco, Nov 3, 2016
    Replies:
    15
    Views:
    452
    Tacoscent
    Tacoscent
    Nov 6, 2016
  20. Arbuzzz

    BUG RPM up to the limit - no engine damage and -0.6 sec in lap time

    Arbuzzz, Mar 19, 2016
    Replies:
    15
    Views:
    305
    Jaye
    Jaye
    Mar 20, 2016
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