Assassin’s Creed 3 Crashes, Errors, Freezes, Lag, Connection and Fixes

By   /   3 years ago

Ubisoft delayed the PC version of Assassin’s Creed 3 on purpose as they wanted to give a better port to the users. The day has arrived when the game has been released on PC globally. So is it a good port or a bad one?

Well, I would say that it’s looking slightly better than the predecessors. However, there are possibilities that you may face some errors, crashes or other game breaking issues.

If you are looking for the fixes on these problems, you can browse through the following short list of various problems that can spoil the fun for you.

#1 Asssassin’s Creed 3 Poor Performance/FPS Drop
If you are having performance problems even after meeting the recommended system requirements, you can try out the following:

Being a Nvidia user, you need to try these beta drivers.
Make sure that no/minimum background applications are running. Also try turning off Fraps as it can also give you some boost in peformance.

#2 Assassin’s Creed 3 Setam Code Error – Activation Code Not Valid From Uplay
If you are receiving this error, you should restart Uplay and try again. It should work after some time.

#3 Assassin’s Creed 3 – How to Redeem Additional Content In Deluxe Addition (Benedict Arnold DLC)
If you have the additional content which comes with the deluxe addition and don’t know how to redeem it, then you should start the game and click the “Extras” button. Here, you can enter the code and get the bonus. You will unlock it after sequence 8.

#4 Assassin’s Creed 3 Graphics Problem – Black Bars On Top and Bottom of Screen
The issue is related to the aspect ratio. Hopefully, Ubisoft will come up with a fix but for the time being, you will have to be contented with 16:9 or 4:3 rather than 16:10 which will give you these black bars.

#5 Assassin’s Creed 3 Crash – Nvidia Drivers Stopped Working
For Nvidia users, there are beta drivers available which can resolve the crash issue. However, if the beta drivers (which can be unstable), don’t work, you should roll back to the stock version.

#6 Assassin’s Creed 3 Error – Driver Stopped Responding
You can do two things to fix the issue:

  • Try the beta drivers.
  • Or if you have overclocked GPU, reset it to the factory setting to avoid the crash.

#7 Assassin’s Creed 3 Crashes at Menu Screen
You need to check the integrity of game files. It may replace the ac3.exe file and fix it. Otherwise, you can ask someone to send their file to you which you can replace with your own downloaded file.

#8 Assassin’s Creed 3 CRC Error – Unable To Install/Launch
The error usually corresponds to the missing files in the download or the media is unable to read. These are the things you can do to get rid of it:

  • Clean the media source (CD) properly and try again.
  • If it’s a digital download, it may have missed some files. A fresh download may solve the issue.
  • Make sure that your firewall isn’t blocking the game.
  • If you are getting the error during launch, try running the game as ‘administrator’.

#9 Assassin’s Creed 3 Connection Issues/Lag
You may encounter horrible lag in the multiplayer or may not be able to join with your friends or other games. To solve this problem, check the following:

  • Your windows firewall/antivirus should not be blocking the game.
  • Make sure that the following ports (required for AC3 multiplayer) are opened:
    • UDP: 21200, 7959, and 3074
    • For Uplay (TCP): 80, 443, 13000, 13005, 13200

If you come across any other issue, let us know by commenting below!

Being the managing editor, Ali manages a lot of the editorial duties as well as publishing stories for you. A long-time gamer, his favorite game series is the Gears of War but when he's not gaming he likes to kick back with a few popular animes like Naruto.
  • Aditya Upadhye

    in the first level it stops working and freezes when desmond enter the door in the cave.

  • vinay

    my problem is my windows 7 ultimate was 32bit . please tell me how can i run this game with 32bit ihave all other requirements in high quality

  • Reiza

    The Game was ok, but when im starting to craft, open the accounting book, several keyboard cant pressed, like cant go back (press backspace), i just can press the (enter) key. There is any fix of this problem?

  • Andrea)

    The game was alright until half way through and it started lagging for the whole time. Not sure if it’s my laptop overheating or something. Any suggestions?

  • Snax

    When I click PLAY from first screen, I get the following error:

    “The procedure entry point WinSqmAddStreamEx could not be located in the dynamic link library ntdll.dll”

    Anyone know how to fix this issue?


  • Des

    Hello there!

    AC3 crashed and now won’t start, can’t even launch the game. Interestingly enough, the multiplayer is still available.

    I did try all the options at #8, but no progress at all.

    Any ideas?


  • asif shaikh

    hello friends
    i was too having a problem with assassins creed 3
    when desmond is entering the temple by using apple of eden at the very start of the game my game used to hang. so what i did is i used system restore settings in my windows seven ultimate
    when ur computer is booting keep on pressing f8 button and select repair my computer option
    and then select system restore from it
    restore your pc to a suitable restore point and ur game will not hang
    hope dis may resolve your problem

  • deep

    i have intel i5 2.6 GHz, 4GB ram, nvidia GT geforce 520 mx 1GB

    and i have install this Beta driver but still my game isn’t workink well, it freezes after few minutes and ac3.exe not responding occurs, graphics are set to very low but still game dosen’t work

  • stelios

    hello guys.i have problem with ac3 when i play multiplayer,my pc just freezes after 10 minutes of gameplay and i cant do a thing ,but i have that problem only at multiplayer mode i play normal at story mode.plz if u have the same problem and u have find a solution plz help..

  • Roro

    Does anybody know how to solve my problem?Please i need some help,How to pass isdone problem ?I cant get any solution ,the roblme is when i install assassin creed 3 when it become 89,0%of install ,it give me isdone error

  • Earth

    A problem caused this program to stop interacting with Windows.

    Problem signature:
    Problem Event Name: AppHangB1
    Application Name: AC3SP.exe
    Application Version:
    Application Timestamp: 509d6d53
    Hang Signature: fa07
    Hang Type: 2048
    OS Version: 6.1.7600.
    Locale ID: 1054
    Additional Hang Signature 1: fa07c7095f8ee336864b783bd34c46d2
    Additional Hang Signature 2: 86bb
    Additional Hang Signature 3: 86bba4e7b47e087c5a1a4750ab628301
    Additional Hang Signature 4: fa07
    Additional Hang Signature 5: fa07c7095f8ee336864b783bd34c46d2
    Additional Hang Signature 6: 86bb
    Additional Hang Signature 7: 86bba4e7b47e087c5a1a4750ab628301

    Intel Core i5-3210M 2.50 GHz
    nVidia GeForce GT 630M (2 GB)
    RAM 4 GB DDR3
    DirectX 11
    Please help… What should I do?


    I had CONSTANT CRASHES with this game running on Windows 7, 64-bit quad core with GTX 580 graphics card.
    In BOSTON and the UNDERGROUND were by far the worst, crashing every 30 seconds (completely unplayable in parts)
    The first thing i tried was to set the AFFINITY of the application to one processor, this helped to start with but makes the game FAR too slow to play and still crashed, just 90% less
    Pause the game
    Start Task Manager
    Processes tab
    Right click AC3SP and Set Affinity…
    Tick just one processor and click OK
    The next thing i tried and has worked 100% so far (touch wood) is to UNDERCLOCK my graphics card
    I use a program called EVGA PRECISION but you can also use the NVIDIA CONTROL PANEL or if you have a Radeon card, whatever that uses
    The stock values =

    I changed them to =


  • Joha

    I can run the game just fine no problems with the FPS but when i have played for a while my computer sudenly crashes and i dont know if its the game crashes or the computer overheating. If anyone got a sulotion please share it

  • Roro

    Hi i have a problem when i install the game and when it become over 89.0% it give me ISDONE error an error occured while unpacking error6 Please i neeed some help guys Please “ASAP”

  • malinda

    My pc works fine when playing the game except the fps is low. But aftr sequence 7 or 8 , where the main mission is in new york city, the game crashes when i go through fast travel to new york. It crashes when itzbdeing loaded.
    My system specs : core 2 duo E8600 @2.66, 3GB ram, nvidia GT630 1GB GDDR3, DX1
    Please help me!

  • Suryansh Prabhat

    Problem Event Name: APPCRASH
    Application Name: AC3SP.exe
    Application Version:
    Application Timestamp: 509d6d53
    Fault Module Name: AC3SP.exe
    Fault Module Version:
    Fault Module Timestamp: 509d6d53
    Exception Code: c0000005
    Exception Offset: 02446f7a
    OS Version: 6.1.7600.
    Locale ID: 16393
    Additional Information 1: 0a9e
    Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
    Additional Information 3: 0a9e
    Additional Information 4: 0a9e372d3b4ad19135b953a78882e789
    PENTIUM(R)DUAL-CORE CPU E5500 @ 2.80 GHz 1.60 GHz
    2 GB RAM
    DIRECTX 11


    • derek

      Your dual core processor isn’t fast enough.
      Your Radeon 5450 can hardly play Saints Row3 without fps issues…

      The video card is not your main issue, the processor speed is bottlenecking your performance.

      I hope I helped you

      • Ahmad

        I can play Ac III with Radeon 5450 1GB DDR3 in normal graphic and few lags but it work fine with me

      • Ashraf

        Same happened with me.

        Problem signature:
        Problem Event Name: APPCRASH
        Application Name: AC3SP.exe
        Application Version:
        Application Timestamp: 509d6d53
        Fault Module Name: AC3SP.exe
        Fault Module Version:
        Fault Module Timestamp: 509d6d53
        Exception Code: c0000005
        Exception Offset: 003ed941
        OS Version: 6.1.7600.
        Locale ID: 1033
        Additional Information 1: 0a9e
        Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
        Additional Information 3: 0a9e
        Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

        Read our privacy statement online:

        If the online privacy statement is not available, please read our privacy statement offline:

        My System Requirements Are As Follows-
        Pentium(R)Core 2 Duo @ 2.66 Ghz 2.67 Ghz
        2 Gb Ram
        Nvidia G-force 9500GT DDR 2 Graphics Card
        Directx 11
        Windows 7 Ultimate 64 Bit