# How to fix Call of Duty: Modern Warfare Error Code 4 on Xbox **URL:** https://www.compsmag.com/blogs/how-to-fix-call-of-duty-modern-warfare-error-code-4-on-xbox/ **Author:** Ayushi Chauhan **Published:** 2023-01-31 **Updated:** 2023-01-31 **Categories:** Blogs **Tags:** Best of Best, Blogs Daily, Computer Guides, Computers Tips and Tutorials, guiderobert, Guides and Tutorials, guiding12, How To Guide, How To Guides, internet tips and tutorials, Originals How to, Software tips and tutorials, Tips, Tricks, Windows Tips **Reading Time:** 6 min --- When attempting to play the game Warzone, an error code 4 may appear. The most frequent cause of this error code is a problem with the [game’s](https://compsmag.com/best/games/) files, though it can occur for a number of other reasons as well. The [multiplayer game](https://compsmag.com/best/multiplayer-games/) may occasionally crash or refuse to launch if these files are missing or become corrupt. Other times, this error code can appear if the [action game’s](https://compsmag.com/best/action-games/) installation is problematic. A number of issues, including the game not starting at all, may arise if the game is not installed correctly. If this happens while you are playing Call of Duty Warzone or Modern Warfare, you may receive error code 4 and an error message indicating that you have been disconnected from the Warzone or Modern Warfare servers. It is extremely frustrating when this error code keeps happening. If it is currently bothering you, scroll down to find more practical solutions. For the PlayStation 4, [Xbox One app](https://compsmag.com/best/xbox-one-apps/), and Microsoft [Windows](https://compsmag.com/best/windows-apps/), Call of Duty: Warzone, a free-to-play [battle royale game](https://compsmag.com/best/battle-royale-games/), was [released on March 10, 2020](https://www.callofduty.com/modernwarfare). During Season 2 of the Modern Warfare content, the [online game](https://compsmag.com/best/online-games/) was released. It connects to Call of Duty: Black Ops: Cold War from 2020 and Call of Duty: Vanguard from 2021 and is a part of Call of Duty: Modern Warfare from 2019. ## Ways to fix Call of Duty: Modern Warfare Error Code 4 on Xbox ### Restart Your Console Before trying anything else, one of the first things we advise is simple but very effective. There is no question that restarting your console works the majority of the time. No matter if you’re using the Activision game launcher on an Xbox One or a [Computer](https://compsmag.com/best/computers/), turn off everything, delete any unnecessary background processes, and [restart your computer](https://compsmag.com/blogs/how-to-restart-computer/) right away. If you are still having trouble getting past the error code, it would seem that our case may be more complicated than first thought. Continue reading to learn about additional strategies that could be used in this situation. ### Test Your Network Connection Contrary to other [Call of Duty games](https://compsmag.com/best/call-of-duty-games/), Warzone does not offer a single-player campaign mode. On the other hand, this is a live-service game that constantly uses the internet, so a strong network connection is unquestionably essential. To establish a solid connection with Warzone’s servers, you must have consistent internet speeds and low ping. We’ve learned from extensive research and some personal testing that users need a minimum download speed of 10 Mbps in order to play Call of Duty: Warzone without any problems. However, if you stream, that number is increasing significantly. Users typically need 60-100 Mbps of download speed to play through the game without breaking a sweat because [media server software](https://compsmag.com/best/media-server-software/) adds up to a heavy load. Regarding the ping, another essential factor that enables online gaming, any value as long as it is under 100 milliseconds is acceptable. Of course, you can always upgrade your internet connection for better performance. Having said that, the main purpose of this conversation is to evaluate your internet connection. By doing so, you can determine whether a shoddy, unstable internet connection is to blame for all these problems. Speedtest.net is the website we recommend for carrying out the task at hand. You can depend on it to determine the strength of your internet connection because it is advised for obtaining accurate test results. What we were able to obtain from the website is shown here. However, if your internet is functioning normally and you have already double-checked that it is, continue reading to learn about additional methods that can assist you in fixing the Warzone Xbox error code 4. ### Scan and Repair the Game We’ll be using one of the many features of the internal Activision Launcher, also known as Battle.net, for this fix. Similar to Steam, but much less well-known than the renowned Valve launcher, is this. If you play on Xbox, skip this section and move on to the next relevant solution. This fix is only for [gaming PC](https://compsmag.com/best/gaming-pcs/) users. It doesn’t matter if the game you install is Call of Duty: Warzone or Overwatch; the Battle.net launcher includes a feature called “Scan and Repair.” You can find out if any missing configuration files were keeping you from playing the game using this specialized functionality. The first step is to launch the Battle.net launcher on your PC. This can easily be done by typing the name of the application in the window’s search bar. Once Battle.net is launched, go to the Games section and look for Call of Duty: Modern Warfare. A word of warning: Warzone is a free-to-play mode to enjoy within Modern Warfare. Thus, the base game is the latter, of which Warzone is only a part. ### Erase the “Call of Duty Modern Warfare” Folder This is yet another PC-specific fix, so if you play on an Xbox, keep reading to try out something that works with Microsoft’s top gaming console. All associated game files are kept locally on the PC when you download Call of Duty: Modern Warfare. However, it’s claimed that one key configuration file is the root of all the issues and is keeping the game from loading. We’re not too sure what file is this exactly, but users have reported that deleting the “Call of Duty Modern Warfare” folder altogether helps you fix the error code 4 Warzone. Following this procedure, the game will ask you to update, which will return it to its ideal state. Follow the instructions listed above to find out how to accomplish this. Start by opening the “File Explorer” system app on your Windows PC. This should be fairly easy to do, given that you are using the Windows search bar. Continue by clicking on “My Computer” in the sidebar and selecting “Documents” in the center of the screen to proceed. Immediately after that, you will have access to a folder called “Call of Duty Modern Warfare.” Delete it from your system and continue to empty the Recycle Bin as well to finalize the process. ## Final Words CoD Warzone is a unique franchise that takes new gameplay mechanics and additional new items into consideration. Since its release, the number of CoD users has grown steadily. It has, however, also served as a haven for errors. Fortunately, every one of them can be resolved internally. A problem with error code 4 has recently been reported by some CoD warzone users. The error that appears on the screen is code 4. The message “You have been disconnected from the Modern Warfare servers” appears when a player tries to log in. Furthermore, those users have a difficult time logging into the CoD warzone server. We hope our article on “How to fix Call of Duty: Modern Warfare Error Code 4 on Xbox” will surely help you to do so. --- *End of Article*