How to fix Assassin’s Creed Syndicate Errors: Crash, Lag, ACS.exe has stopped working and more

How to fix Assassin’s Creed Syndicate Errors: Crash, Lag, ACS.exe has stopped working and more

This guide provides you some of the issues in the game and how to fix Assassin’s Creed Syndicate errors. Ubisoft is here with yet another installment in the popular Assassin’s Creed series. Assassin’s Creed Unity faced criticism among fans for poor optimization on PC and consoles. Seems like Ubisoft developers have learned a lesson from it. Unlike Unity, Assassin’s Creed Syndicate has lot less issues on PC and consoles. But we have still heard of a few common PC errors like no sound, stuttering and severe lag that the users are facing.

We present you this guide to teach you how to fix the most common issues and errors encountered in Assassin’s Creed Syndicate PC version. But before everything, please make sure your PC meets the official system specifications to run the game. Check out the minimum and recommended system requirements of the game below.

Assassin’s Creed Syndicate Official System Requirements


  • Supported OS: Windows 7 SP1, Windows 8.1, Windows 10 (64-bit versions)
  • Processor: Intel Core i5 2400s @ 2.5 GHz or AMD FX 6350 @ 3.9 GHz
  • RAM: 6 GB or more for Windows 7, Windows 8.1, Windows 10
  • Video Card: Nvidia GeForce GTX 660 or AMD Radeon R9 270 (2GB VRAM with Shader Model 5.0)
  • DirectX: DirectX June 2010 Redistributable
  • Sound: DirectX compatible sound card with latest drivers


  • Supported OS: Windows 7 SP1, Windows 8.1, Windows 10 (64-bit versions only)
  • Processor: Intel Core i7-3770 @ 3.5 GHz or AMD FX-8350 @ 4.0 GHz
  • RAM: 8 GB
  • Video Card: Nvidia GeForce GTX 760 (4GB) or the newer GTX 970 (4GB) or AMD Radeon R9 280X (3GB) or better
  • DirectX: DirectX June 2010 Redistributable
  • Sound: DirectX 9.0c compatible sound card with latest drivers
  • Hard Drive: 50 GB available space
  • Technical note from the developer: For a recommended experience, the game requires a video card with at least 3 GB of VRAM when playing at a full HD resolution. While we encourage you to fiddle with the advanced options to fully customize your gaming experience, please keep an eye out for the VRAM meter usage when you adjust these settings.

How to fix Assassin’s Creed Syndicate Errors: Crash, Black Screen, Server Issue, Freezing, Stuttering and more

1. No sound in Assassin’s Creed Syndicate Fix

To fix this issue

  1. Press Win+R
  2. Type “dxdiag” without the quotation marks and hit enter
  3. A new windows pops. Now go under Sound tab and lower the Sound acceleration from there
  4. Launch the game

This fix didn’t work for some users so we have to wait for an official patch from Ubisoft.

2. Crash during startup/random crashes/black screen/failed to launch fix

  • Players who are facing issues like the game crashing to desktop while launching or during gameplay should try updating their video card drivers. We suggest users to do a clean install of the video card drivers by downloading them from the official website.
  • If you have the game on Steam, we suggest you to verify the game cache to avoid such errors.
  • Another simple but useful method is to play the game in Compatibility mode. For this, right click on the game’s .exe and click Properties. Under the Compatibility tab, set the Compatibility mode to either Windows XP SP3 or Vista.
  • Users with SLI/Crossfire setup can try disabling it and laptop users should use the dedicated GPU instead of the integrated one

3. Stuttering/Micro-stuttering in Assassin’s Creed Syndicate Fix

This issue is solved by disabling VSync from the graphics settings in the game.

4. ACS.exe has stopped working error Fix

This issue has been faced by many users. You can fix this error by following the steps

  1. Right click “This PC” from desktop and click Properties
  2. Go to Advanced System Settings from left column
  3. Click Settings in the Performance section
  4. Under Data Execution Prevention enable Turn on DEP for all programs and services except those I select
  5. Select ACS.exe by browsing the installation folder and click Apply

This will solve ACS.exe has stopped working error.

You may also write to read How to Fix You Can Not Set DEP Attributes on 64 bit Executables.

These were some of the common issues and now you know how to fix Assassin’s Creed Syndicate errors. If you are still facing issues running Assassin’s Creed Syndicate, feel free to ask in the comments. We will try our best to solve the issues that are preventing the game from running correctly. And we will keep updating this page as new issues are encountered by the users.

How to fix Assassin’s Creed Syndicate Errors: Crash, Lag, ACS.exe has stopped working and more
Shuvo has been very passionate about technology and gadgets since his early days. He has been an avid gamer too. He is currently pursuing engineering in Computer Science. He loves trying out new apps and and sharing his knowledge with the world.
  • Fadhlan Yudi Putranto

    hey i follow your step for acs.exe stopped. i got problem when i want to select acs.exe, it say “You can not set DEP attributes on 64-bit executables” warning. do you know how to fis it?

    • CrazySurfaNZ

      I had the same problem.

    • Kristijan Bačić

      I have that problem now how to fix it

    • Jessica Humphrey

      I’ve got this issue as well. Any fixes?

  • THE AnimeFAN

    what do you mean with right click “this pc”?

    • Reema Kumar

      Right-click on the computer icon (My Computer) visible on your desktop

    • Gileno Novaes

      “My PC”.. the steps its same like “Control Painel > System > Advanced System Control “

  • max

    when I run ACS it just brings up ACS.exe but the game does not run i’m just left with the exe – task manager says it’s not using up any cpu – and I have let it do this for about half an hour still does not work. I have tried verifying game cache which has not fixed the problem. pls help

  • Seby Sby

    So….whenever i play the game, being in a park makes my computer crash(the headset starts buzzing and the display shows no signal). Now i’m stuck in the 7th sequnce….what can i do? I’m playing on a GTX 970 at medium settings and 4 GHz processor….

  • Kivous

    #4 soloution is saying ‘you cannot set DEP attributes on a 64 bit executables’ so what to do
    either way can u guide me to a patch (1.21 i am guessin) pls help man i am stuck at that gang-war part

  • sina

    hi i have problem in the game heres the photo can it be fixed?

  • George Saru

    When I try to select ACS.exe it tells me that I ca not set DEP attributes on 64-bit executables.
    What can I do ?


    same here did u find any fix george saru

  • lajat

    Excuse me.. Thans for that DEP thing but when I was going to do that it says you cannot use DEP for 64-bit executables. What should I do??1

  • Kavindu Deshan

    I cant add ACS.exe to DEP
    MY computer Said”You can not set DEP attributes on 64-bit executables

  • samaneh

    i have the asc.exe stopped working and i wanted to use your solution but i get an error that says you cannot set DEP attributes on 64 bit executables .i already added COM surrogate to the list

  • sidharth

    i have a problem with ac syndicate when it reaches “the games saves automatically in this icon ” after showing this the game exit and shows ACS.exe has stopped working can you please help me

  • Silver Dust

    I had the same problem coz nvidia drivers were not selected by default for the game. Make sure u switch to high performance nvidia drivers in nvidia console.

  • mayur patel

    Hey guys
    Plz solve acs.exe stop working problem in x64 win plz plz

  • oliv boy

    Hey, im still having “ACS.exe has stopped working” when i press continue from game menu… i did everything u said… idk what to do anymore i cant even play the first mission…

    • Rodrigo Barreto

      thats what happening to me, nay solution?

      • oliv boy

        Yes i fixed it by updating my driver it was the source of the problem

  • Oneure

    Can I use it to Assassins Creed 3?

  • Amir Kamel

    I have a problem with few “Places” in game. The game works fine until I go to one of these places and: “ACS.exe Has stopped”. most of these places are in the west part of map. for example in mission “fun and games” whenever I enter the red zone the game crashes so I can’t complete the mission. knowing these places, I try to avoid going in them and I’ve managed to reach sequence 8 so far, but I can’t go any further.
    Few months ago I was playing ACU & ACR until I updated my graphic driver and I ran into this problem that after exactly 10 minutes of playing: “ACU / ACR Has stopped”. (I didn’t had this problem until I updated my graphic driver). After that I tried EVERYTHING. I installed ACL and it was the same thing with that as well. So I reinstalled my windows and reinstalled ACL and the game was working fine. Few crashes after about 5 hours of playing but it was alright. Until Nvidia GeForce Experience automatically updated my graphic driver. (F@%&) and after that it was the same $hit. Now ACL stops working after 10 mins and I can’t complete ACS’s 8th sequence.

    Windows 10
    GTX 750Ti
    Intel Core i7-6700k 4.00GHz
    16GB RAM
    Driver version 381.65
    Nvidia Geforce Experience Ver
    Games graphic: Lowest possible