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 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:
    31,594
    pankykapus
    pankykapus
    Jan 3, 2021
  2. AC Support
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    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:
    84,448
    Tiago Fortuna
    Tiago Fortuna
    Nov 12, 2013
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  1. Sacarosa

    SOFTWARE/HARDWARE ISSUE UE4 Fatal Error RenderThread [GPU hang]

    Sacarosa, Mar 19, 2021
    Replies:
    5
    Views:
    157
    xaotik
    xaotik
    Mar 22, 2021
  2. mbkmsi

    SOFTWARE/HARDWARE ISSUE UE4-AC2 Fatal Error since British DLC update 1.7.0+

    mbkmsi, Mar 8, 2021
    Replies:
    5
    Views:
    214
    mbkmsi
    mbkmsi
    Mar 30, 2021
  3. remy jeremie

    SOFTWARE/HARDWARE ISSUE Game crash always with Hungaroring Line 3168 [.pak signature mismatch]

    remy jeremie, Apr 8, 2021
    Replies:
    2
    Views:
    36
    remy jeremie
    remy jeremie
    Apr 8, 2021
  4. Bjay_23

    SOFTWARE/HARDWARE ISSUE AC2 UE4 Crash [.pak signature mismatch]

    Bjay_23, Apr 8, 2021
    Replies:
    1
    Views:
    84
    xaotik
    xaotik
    Apr 9, 2021
  5. LilFitymafej

    SOFTWARE/HARDWARE ISSUE Fatal error every session - "Unable to recover from bad read"

    LilFitymafej, Apr 8, 2021
    Replies:
    4
    Views:
    86
    LilFitymafej
    LilFitymafej
    Apr 9, 2021
  6. thR4z0r

    SOFTWARE/HARDWARE ISSUE Game crashes after some time racing (MP-SP) [Audio driver hang]

    thR4z0r, Apr 6, 2021
    Replies:
    1
    Views:
    80
    pankykapus
    pankykapus
    Apr 10, 2021
  7. Rawhawk

    SOFTWARE/HARDWARE ISSUE G-sync/freesync not working in ACC

    Rawhawk, Apr 24, 2021
    Replies:
    7
    Views:
    176
    Rawhawk
    Rawhawk
    Apr 25, 2021
  8. AurusCE

    SOFTWARE/HARDWARE ISSUE Crash while racing [GPU hang, low VRAM]

    AurusCE, Apr 30, 2021
    Replies:
    0
    Views:
    70
    AurusCE
    AurusCE
    Apr 30, 2021
  9. Aclo

    SOFTWARE/HARDWARE ISSUE Always CPU >99% after upgrade to i7 10700K

    Aclo, Feb 16, 2021 ... 2
    Replies:
    23
    Views:
    468
    kokiaikawa45
    kokiaikawa45
    May 6, 2021
  10. whixe

    SOFTWARE/HARDWARE ISSUE I can't open the game get an instant fatal error [unsupported FF device connected]

    whixe, Mar 29, 2021
    Replies:
    4
    Views:
    165
    t4tuz4lem
    t4tuz4lem
    May 7, 2021
  11. p.ittam

    SOFTWARE/HARDWARE ISSUE Fatal error: [File:Unknown] [Line: 819] after 1.7.8 update [unsupported GPU driver version]

    p.ittam, May 7, 2021
    Replies:
    2
    Views:
    108
    p.ittam
    p.ittam
    May 7, 2021
  12. AceGoat

    SOFTWARE/HARDWARE ISSUE ACC causes internet to stop working in an odd way

    AceGoat, May 9, 2021
    Replies:
    3
    Views:
    141
    Rudski
    Rudski
    May 11, 2021
  13. milko9000

    SOFTWARE/HARDWARE ISSUE Can't save setup preset, saving livery crashes game - [W10 controlled protection interfering]

    milko9000, May 13, 2021
    Replies:
    2
    Views:
    75
    milko9000
    milko9000
    May 13, 2021
  14. cmanszew

    SOFTWARE/HARDWARE ISSUE Stutter (race only) ver 1.7.0+ [Resolved by disabling Windows DVR]

    cmanszew, Mar 6, 2021 ... 2
    Replies:
    25
    Views:
    1,154
    cmanszew
    cmanszew
    May 17, 2021
  15. Luis Branco

    SOFTWARE/HARDWARE ISSUE UE4-AC2 Crash [potential driver installation issue/corrupted install]

    Luis Branco, Jun 6, 2021
    Replies:
    1
    Views:
    109
    Luis Branco
    Luis Branco
    Jun 7, 2021
  16. rG|AffeMitWaffe®

    SOFTWARE/HARDWARE ISSUE CPU Usage warning ONLY when Speedlink DRIFI O.Z. is used [subpar CPU & potential driver issue]

    rG|AffeMitWaffe®, Jun 9, 2021
    Replies:
    1
    Views:
    61
    xaotik
    xaotik
    Jun 10, 2021
  17. BAD_pOOh

    SOFTWARE/HARDWARE ISSUE Could not connect to Steam

    BAD_pOOh, Jun 13, 2021
    Replies:
    2
    Views:
    79
    BAD_pOOh
    BAD_pOOh
    Jun 14, 2021
  18. BlubberBernd

    SOFTWARE/HARDWARE ISSUE d3d lost / random freeze and crash without error msg [malconfigured pagefile/virtual mem settings]

    BlubberBernd, May 25, 2021
    Replies:
    13
    Views:
    217
    xaotik
    xaotik
    Jun 21, 2021
  19. M_Griso

    SOFTWARE/HARDWARE ISSUE acc crash at start up [userdocs/config folder permissions / antivirus software exception]

    M_Griso, Jun 6, 2021
    Replies:
    8
    Views:
    210
    M_Griso
    M_Griso
    Jun 28, 2021
  20. Garnet

    SOFTWARE/HARDWARE ISSUE Meca Pedals feel 'wrong'

    Garnet, Jun 30, 2021
    Replies:
    2
    Views:
    83
    Garnet
    Garnet
    Jul 1, 2021
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