These errors are ruining the whole excitement of the new update, and we don’t want that to happen. Thus, we have some working solutions to fix all issues stopping you from enjoying the latest Pacific update. You can try the below-mentioned fixes to resolve the COD Modern Warfare multiplayer not working on Xbox, PlayStation, and PC. So, let’s move ahead and check them out. 

What Causes Modern Warfare Multiplayer Not Working

Several players bombarded Modern Warfare’s Reddit community with the issues they faced with COD: Modern Warfare. Many players got errors, like ‘Missing Data Pack’ when they tried to play the game in the multiplayer mode. They tried restarting the game as well as the console but the issue wasn’t fixed. The list of errors keeps on going. There could be various reasons behind the Modern Warfare multiplayer not working issue.  Corrupted Cache Data on Consoles: One of the expected causes of the issue is the corrupted cache data. No doubt, cache helps games and applications run efficiently, but sometimes it causes issues too. There are possibilities that the existing cache is interfering with your game. This is why you are facing issues with COD: Modern Warfare. You can try cleaning the cache to fix the problem to get rid of this.  Outdated Drivers: Outdated drivers are another common cause of the issue. COD: Modern Warfare requires a stable connection to run smoothly. And in that case, network drivers hold a significant rule. If your loading screen gets stuck or you notice a high ping drop, there could be something wrong with your network drivers. There is a possibility that your drivers have been outdated. You need to update them to avoid the issues. Invalid Licenses: The invalid license issue has now become the most common problem for PlayStation users. Users reported that even after having a valid license, they are still unable to play COD: Modern Warfare. One of the primary causes behind the issue could be some inconsistencies in the system. You can resolve this issue by restoring this particular issue by restoring your license. Missing Multiplayer Packages On Next-Gen: Many PlayStation and Xbox users got the ‘Missing Data Packs’ error on the game loading screen. If any of the data is missing, you won’t be able to play COD: Modern Warfare’s Multiplayer Mode on any console. Besides these, there could be many more causes of this issue, such as regional issues, launcher issues, and a few more. Yet, these are some of the most common reasons for the COD Modern Warfare multiplayer not working issue. Let’s now check the fixes to resolve these issues and enjoy the new Pacific update. 

Fix COD Modern Warfare Multiplayer Not Working

There are several fixes to the issue, and this section explains all of them. We have mentioned all relevant and potential fixes that will help you fix the problem on Xboxes, PlayStation, and PC.

Fix COD Modern Warfare Multiplayer Not Working On PS4, PS5, & Xbox

You can now start following the below-mentioned methods to fix COD Modern Warfare multiplayer not working on PS4, PS5, and Xbox.

1. Clear The MAC Address (For Xboxes Only)

One of the ways to fix COD: Modern Warfare multiplayer not working is to clear the MAC Address. Many users stated that their COD: Modern Warfare started working without any issues right after clearing the Xbox’s MAC Address. However, this fix only applies to Xbox, not to other consoles. You can follow the steps to reset the Mac Address on your Xbox. 

  1. Open the Settings of your Xbox. 
  2. Then, move to Network Settings from General Settings. 
  3. Now, select Advanced Settings.
  4. After that, choose the Alternate MAC address option from the given options.
  5. Click the Clear button to reset the Xbox’s MAC Address. You did it. Reboot your Xbox and launch the game and check whether the issue is fixed or not. 

2. Uninstall Multiplayer Packs (For All Xboxes, PS4 & PS5)

COD: Modern Warfare has varied multiplayer modes, and each mode asks you to download additional files. Sometimes these multiplayer packs start causing the issue. Thus, the best way to troubleshoot this is to uninstall the multiplayer packs from your console and download them again. You can easily uninstall multiplayer packages on both Xbox and PlayStations.

Uninstall Multiplayer Packs On Xbox One, Xbox Series S & Series X

You can follow the steps to uninstall multiplayer packs on Xbox.

  1. Open your Xbox’s Storage Drive. 
  2. Head to the Manage section of your Xbox’s storage drive.
  3. Move to the Leftover add-ons section from the left navigation pane. 
  4. Click on Uninstall to delete all downloaded multiplayer packs except the below-mentioned packs.  Note: Don’t delete these four integral packs: 
  5. If any of the above-mentioned files is missing. Head to Fix 5 and download them on your console.  That’s it. Restart your Xbox and launch the game to see whether the problem is resolved or not.  Follow the below steps to uninstall multiplayer packs on PlayStation 4 & 5.
  6. Navigate to your console’s storage drive. 
  7. Search for multiplayer packs in your console’s storage drive. 
  8. Click on Uninstall to remove existing multiplayer packs except for the below-mentioned ones.  Note: Don’t delete these six important packs:  If you find any above-mentioned file is missing. Head to Fix #5 and download them on your PlayStation. 
  9. Lastly, restart your console and check the status of the issue. 

3. Use a Dedicated Launcher (For All Xboxes, PS4 & PS5)

Activision has really made a blunder by integrating Call of Duty: Modern Warfare and Call of Duty Warzone, into Call of Duty: Cold War. Many players stated this was the main culprit of the entire problem. When you launch the game through Call of Duty: Cold War launcher, it automatically launches both games. Eventually, it starts causing issues. There is a high possibility that this is the main reason for your issue. So, from now onwards, you need to be a bit cautious when launching the Call of Duty Modern Warfare Multiplayer. You only need to ensure that you launch the game from its Dedicated Launcher. Console users can launch the COD: Modern Warfare from its dedicated launcher by selecting from the list of games.

4. Clear The Console Cache (For All Xboxes, PS4 & PS5)

The cache is one of the most common causes behind COD: Modern Warfare not working, and some players reported the same. Yes, the cache stored on your consoles helps in many ways. But, sometimes, it creates issues like this one. Therefore, you can try clearing the clear cache of your console. Furthermore, this method applies to all consoles: Xbox One, Xbox Series X/S, and PlayStation 4 & 5. You can now follow the steps to know how to do the same.  Clear Cache On Xbox One Xbox doesn’t offer a built-in feature to clear the cache. Though it is still possible to clear cache on Xbox One just follow the below steps.

  1. Press and hold the power button of your Xbox One until the LED turns off. 
  2. Once the console is turned off, remove the power cable to stop the power supply completely. 
  3. Wait at least 2-3 minutes to ensure that the cache has been deleted. 
  4. Once the time is over, plug in the power cable again and turn on your Xbox One.  Clear Cache On Xbox Series X and Series S Clearing the Xbox Series X and Series S cache is relatively easier compared to Xbox One. Both are the latest and next-generation consoles. Xbox Series X and Series S have an option to clear cache in a few steps. Follow the below steps to clear the cache on Xbox Series X and Series S.
  5. Press the Xbox Logo Button on your gaming controller.
  6. You will now see the Profile & System window. 
  7. Then, click on Settings. 
  8. Head to All Settings, then move to the Devices and Connections section. 
  9. Select the Blu-Ray from the options.
  10. Move to Go to Persistent Storage and click Clear Persistent Storage to clear your Xbox X/S Series cache files. 
  11. Reboot your Xbox X/S Series console and open COD: Modern Warfare Multiplayer.  Clear Cache On PS4 and PS5 Sony doesn’t offer a dedicated option to clear the cache on PlayStations. You need to force clear all the cached data similar to the Xbox One series. Follow the steps to clear the cache on PS4 and PS5. 
  12. Press the power button and hold it until you hear a sound while the console is turned on. 
  13. Once the light indicator stops blinking, unplug the power cord to stop the power supply. 
  14. Wait at least 30 seconds to let the cache get deleted entirely from your console’s storage drive. 
  15. Put the power cord back and reboot your PlayStation.

5. Install Missing Multiplayer Data Packs (For All Xboxes, PS4 & PS5)

One of the most frequently reported issues is getting the ‘Missing Data Pack’ error on the game loading screen. COD: Modern Warfare is a huge game and requires different multiplayer packs to work properly. However, this now becomes a bit confusing because there are a lot of data packs for COD: Modern Warfare. It is quite challenging to figure out what is needed to run the game.  Usually, data packs vary with the type of console. It depends whether you are playing COD: Modern Warfare on Xbox One, Next Gen Xboxes, or PlayStation. Each of them needs different multiplayer packs to run smoothly. You need to install the below-mentioned data packs to for sure to get rid of the Missing Data Pack error. 

MULTIPLAYER PACK (6.0GB)MULTIPLAYER/ SPEC OPS PACK (6.7GB)MULTIPLAYER/ SPEC OPS PACK (12.3GB)MULTIPLAYER PACK 2 (22.1GB)

Fortunately, the issue can be solved after installing the missing data packs. You can now follow the steps to install missing multiplayer data packs on your respective console. You can install the missing multiplayer data packs from the PlayStation Store or inside the game itself. We will show you how to install missing packs from inside the game as it is much easier. Before installing the packs, you must also ensure that your console storage has at least 90GB of free space to download and store the data packs. Once it is confirmed, you can follow the steps to install the missing multiplayer data packs on PS5. 

  1. Launch COD: Modern Warfare.
  2. Press the R3 button on your controller.
  3. Head to the MODERN WARFARE GAME PACKS section and install the missing data packs by matching them with the above-mentioned multiplayer data packs. 
  4. Once the process completes, restart your PlayStation 5. If you are an Xbox user, you can simply install missing multiplayer packs from the Microsoft Store. Follow the steps to install lacking multiplayer packs on Xbox Series S and Series X.
  5. Launch Microsoft Store. 
  6. Search for Modern Warfare in the Microsoft Store. 
  7. Choose Modern Warfare from the search results and jump to In This Bundle section.
  8. Now, install the required multiplayer data packs.
  9. Reboot your console and launch the game. 

6. Updating the Licenses (PS4 & PS5 Only)

One of the reasons for not being able to enjoy the Multiplayer mode of COD: Modern Warfare could be an issue with your PlayStation license. Mainly PS4 & PS5 users have faced this issue. Possibly, your database doesn’t record COD: Modern Warfare even if you have purchased it. Luckily, Sony has incorporated a feature that lets you update your license to inform the company that you have bought this game and have the license.  You can follow these steps to restore your license on PlayStation 4. 

  1. Open the Settings of your PlayStation 4.
  2. Head to Account Management settings, then move to the Restore Licenses tab. 
  3. Click on OK. 
  4. Once you see your missing license, reboot your PlayStation 4.  You can follow these steps to restore your license on PlayStation 5. 
  5. Open the Settings of your PlayStation 5.
  6. Head to Account Management settings and head to the Restore Licenses tab. 
  7. Click on the Restore button when you see it. 
  8. Once you see your missing license, reboot your PlayStation 4.  These are possible ways to fix COD Modern Warfare multiplayer not working after the Pacific update on all Xbox, PS4 & PS5. If you face the same issue while playing on a PC, check the next section to know the actual fixes. 

Fix COD Modern Warfare Multiplayer Not Working On PC

Many players faced the same issues on PC. Yet, they also suggested some working workarounds to the issues. This section includes all the working methods to resolve the issue. Of course, the workaround would differ from Xboxes, PS4 & PS5 workarounds. You can now follow the below-mentioned methods to fix the issue on your PC. 

1. Update Network Drivers Using Device Manager 

If your game has become choppy and laggy after updating the game to the newest version, then there could be an issue with your network drivers. In that case, updating network drivers may fix the issue. Follow the steps to update the network drivers of your system. 

  1. Press Windows + R to open the Run window. 
  2. Type devmgmt.msc in the search bar. 
  3. Double click on Network Adapters to extend the list. 
  4. Right-click on the Wi-Fi or LAN adapter and click Update Driver. 
  5. After that, choose Search Automatically for Drivers to let the Windows search for updated drivers automatically from the database. 
  6. Now, wait for the drivers to update and see a congratulatory message. 
  7. In the end, Restart your PC and run COD: Modern Warfare to see whether the issue is fixed or not. 

2. Use a VPN

If you still face some lag issues even after updating your network drivers. We will then suggest using a VPN and changing your region or country. Many players faced connectivity issues on PC after the new Pacific update. Interestingly, many of them were able to fix the issue by using a VPN. You can also try using a VPN and try different servers to see which solves the issue.

3. Switch DNS Server

You can also try switching your DNS server if you think DNS is suspected to be causing the problem. Windows allows you to switch DNS servers in a few steps. You can follow the below-mentioned steps to change the DNS server on Windows 11. 

  1. Press the Windows key and type Settings in the search box. 
  2. Click on Settings from the search results. 
  3. Head to the Network & Internet section from the sidebar. 
  4. Make sure the WiFi is turned on, then head to the WiFi section. 
  5. Click on your WiFi name to open DNS settings. 
  6. Look for DNS Server Assignment and click on Edit. 
  7. Select Manual from the given options. 
  8. Then, turn on IPV4.
  9. Add 8.8.8.8 in the Preferred DNS box and 8.8.4.4 in the Alternate DNS box. 
  10. Select Preferred DNS Encryption and Alternate DNS Encryption to Encrypted Only.
  11. After that, click on Save.

4. Recreate The Battle.net Files

When you launch Modern Warfare on your PC, the Battle.net file also launches automatically. However, sometimes Battle.net files start creating cache issues. You need to recreate the Battle.net file or clear the Battle.net cache to fix the issue. You can follow the below-mentioned steps to recreate the Battle.net file. 

  1. Press Ctrl + Shift + Enter to run the Task Manager. 
  2. Jump to the Process section to see all the current processes. 
  3. End all the Blizzard programs, like the Battle.net agent, Battle.net Update agent, etc.
  4. Afterwards, press Windows + R and type %ProgramData% to open the ProgramData folder.
  5. Search for Blizzard Entertainment and Battle.net folders and delete them. 
  6. Lastly, reboot your PC. 

5. Launch The Game From The Dedicated Launcher

One of the ways to resolve the issue is launching the COD: Modern Warfare on PC from its Dedicated Folder. You can simply double-click on the COD: Modern Warfare to launch it. On the other hand, if you launch the game through Steam, you can follow the next method to clear the Steam Cache. 

6. Clear Cache on Steam

In case, you have bought the game on Steam and are facing the same issues with the game. You can try clearing the Steam cache on your PC. You can follow the given steps to clear your Steam application cache. 

  1. Open Steam and head to the Library. 
  2. Head to the Downloads section from the Library menu. 
  3. Right-click on Call Of Duty Modern Warfare. 
  4. Click on the Properties option. 
  5. Move to Local Updates and click on the Verify integrity of the game files… button.
  6. Click on Yes to confirm. 
  7. Once you clean your cache, reboot your PC to check if the issue is gone or not. 

7. Reinstall The Game

If none of those above-mentioned methods works on PC, the ultimate solution is to reinstall the game. Reinstalling the game will definitely fix the issue. Follow the below-mentioned easy steps to uninstall the COD: Modern Warfare.  Open the Battle.net app, and search Call of Duty: Modern Warfare in the Games section. In the end, choose the Uninstall option to uninstall the game completely along with the data. You should now reinstall the game and check the status of the issue. 

How Do I Install Multiplayer on Modern Warfare?

Open the Battle.net app, and log in with your Battle.net account email. After that, select Call of Duty: Warzone. Then, select Multiplayer and click Install. 

Why Won’t It Let Me Split Screen on Modern Warfare?

To split-screen on Call Of Duty: Modern Warfare, you must ensure the second person is not logged in. If yes, then make sure to log out from other devices. You can also try restarting and power-cycle your consoles. 

How Do I Fix Modern Warfare Error?

Some of the best ways to fix Modern Warfare errors are reinstalling the game and installing the missing multiplayer packs. You can also try clearing the Mac Address and Cache of your PS4, PS5, Xbox, and PC.

Why Can’t I Play Multiplayer on COD?

One of the primary causes of not being able to play the game is the corrupted cache files. Most users have experienced the issues because of corrupted cache files. You can clear the cache on your PS4, PS5, Xbox, and. If you are a PC user, you can try clearing the cache of the Steam software. 

What Packs Do I Need Installed To Play MW Multiplayer?

To play Modern Warfare’s Multiplayer Mode on PC, Xboxes, and PlayStation, you must install these two multiplayer data packs: Data Pack 1 and Multiplayer Pack 2.

Final Words

The new Pacific update has many new features, such as a battle pass, new weapons, operators, maps and much more. Yet, continuous bugs and errors are ruining the excitement of playing the new update. It makes it all worthless. You can try these above-mentioned ways to fix COD Modern Warfare multiplayer not working on your console or PC. We assure you that any of the above-mentioned fixes will definitely help you get rid of these errors and bugs. Which fix did work for you? Do let us know in the comments.

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