CoD Disconnected Due to Transmission Error Status Vigorous

Call of Duty (CoD) is a first-person shooter video game that focuses on games set in World War 2. Modern Warfare, Warzone, Vanguard, etc. are popular series. Although the Cod series gain much popularity, some issues happen, for example, COD Warzone not launching on PC, Call of Duty Modern Warfare Dev error 6068, CoD Vanguard crashing on PC, Vanguard Dev error 5573, etc.

Today, we will show you a common issue – disconnected due to transmission error status vigorous. This always appears when you play Warfare, Warzone, or Vanguard on your Windows 11/10 PC. On PS5/4 or Xbox, you may also run into the same issue. The error appears when joining a particular game map or launching the game.

Vanguard/Warzone/ Modern Warfare disconnected due to transmission error can be caused by various factors, for instance, damaged/missing game files, the internet connection issue, corrupt game installation, corrupt game shaders, etc. Fortunately, you can try some ways to easily fix the error.

How to Fix Modern Warfare/Vanguard/Warzone Disconnected Due to Transmission Error

Repair Game Files

Corrupt or missing game files can lead to the disconnected error on Call of Duty and you can try to repair game files to fix it.

When you are running the CoD game on the Blizzard launcher:

1. Launch the Battle.net desktop app on your Windows 11/10 PC.

2. Click your game like Vanguard, Warzone, or Modern Warfare, choose Options, and click Scan and Repair.

3. Tap on Begin Scan.

When you play CoD on Steam:

Launch Steam and go to Library.
Right-click on your game and choose Properties.
Click Local Files > Verify integrity of game files.

Check Your Router Settings

Network connection issues can trigger disconnected due to transmission error status vigorous Vanguard/Warzone/Modern Warfare in Windows 11/10.

You can try to restart your router or modem. Besides, change the NAT type to Open and enable UPnP (Universal Plug and Play) via the router’s online account page.

Related article:

What Are the Different NAT Types and How to Change the Nat Type?
What Is UPnP (Universal Plug and Play)? Get Its Info Now

Change Your DNS Settings

Your DNS server may be a reason for CoD disconnected due to transmission error and you can try to switch to a third DNS server like Google DNS to help you out.

Step 1: Press Win + R, input ncpa.cpl and click OK to open all the network connections.

Step 2: Right-click on your network connection and choose Properties.

Step 3: Click Internet Protocol Version 4 (TCP /IPv4) and choose Properties.

Step 4: Click Use the following DNS server addresses and enter the addresses:

Preferred DNS server: 8.8.8.8

Alternate DNS server: 8.8.4.4

Update Your Network Driver

An outdated network driver may block your CoD game from connecting along with the error of disconnected due to transmission error. To remove it from your Windows 10/11 PC, you can try to update the network driver in Device Manager. After opening this app, expand Network adapters, right-click on the network and click Update driver.

Disable Antivirus Software

If your game conflicts with the antivirus program, the message – disconnected due to transmission error stats vigorous can happen in Windows 11/10. You can try to disable that software. To know details, refer to this post – [Solution] How to Disable Windows Defender Antivirus on Win 10.

Besides, you can allow your game to go through Windows Firewall.

1. Type Windows Defender Firewall to the search box and click Open.

3. Click Allow another app, browse your PC and find the setup file of Modern Warfare, Warzone, or Vanguard.

4. Click Add. Then, make sure the boxes of Private and Public are ticked.

5. Click OK.

Reinstall Shaders

If you meet the issue of Modern Warfare disconnected due to transmission error, the issue may be related to Shaders. Shaders in this game are installed for optimization. If the installation goes wrong, the issue happens. Try to reinstall Shaders via the following steps.

Start your game and go to the Options
In the Graphics tab, locate Restart Shaders Installation.
Click Restart. Wait for a while and the reinstallation process will complete.

That’s it. Feel free to leave a comment below if you have any other alternate ways that work for you.

— Update: 21-02-2023 — us.suanoncolosence.com found an additional article How to Fix “Disconnected due to transmission error” 2023 from the website www.drivereasy.com for the keyword disconnected due to transmission error on modern warfare.

Having the error “Disconnected due to traminission error; status: VIGOROUS” popping up when playing Modern Warfare, Warzone or Vanguard? You’re definitely not alone! This occurs due to a connection problem. But your corrupted game files may also be the culprit.

Before following the troubleshooting guide, we would like to mention that if you have Modern Warfare installed on an external drive, move it to your system’s main drive. Although it seems to be irrelevant, give it a shot as some gamers found that it helped.

And to isolate the issue, you should check the server status in case they temporarily shut down the servers or the servers are under maintainence. If there are no reports on the server side, try these fixes:

Repair your game files
Update your network driver
Change your DNS settings
Reinstall shaders
Disable antivirus software
If your problem persists…

1. Repair your game files

Corrupt or missing game files can cause a lot of issues. To make sure your game file are intact, use the “scan and repair” tool on Blizzard launcher or “verify integrity of game files” on Steam:

Repair game files on Blizzard launcher

1) Open the Battle.net desktop app.

2) Click your game title. Then click on the cogwheel icon and select Scan and Repair from the list.

3) Click Begin Scan. Then you need to wait for the repair to finish.

Verify integrity of game files on Steam

1) Open your Steam client.

2) Under LIBRARY, right-click your game title and select Properties.

3) Select the LOCAL FILES tab and click on the VERIFY INTEGRITY OF GAME FILES… tab.

If repairing game files didn’t help you fix the issue, the problem might be from your side. Before tweaking any settings, we suggest you restart your router or modem if you haven’t done this in a while. This can work like magic. However, if you’re not able to see any differences, try the next fix below.

2. Update your network adapter driver

When you keep disconnected from Modern Warfare, it’s high time you troubleshoot your network. If you’re using a wireless connection, switch to the wired connection. However, if you have to use a wireless network, there are other ways to make sure that you have a better internet connection. One of the steps you can take is to check if your network driver is outdated or misconfigured, which can cause connection problems. To fix it, you need to update your network driver.

To update your network driver, you can either do it manually via the Device Manager or head to the manufacturer’s driver download page to download and install the exact drivers for your system. This requires a certain level of computer knowledge and can be a headache if you aren’t tech-savvy. Therefore, we would like to recommend you use an automatic driver updater such as Driver Easy. With Driver Easy, you don’t need to waste your time hunting for driver updates as it will take care of the busy work for you.

Read more:

Here’s how to update drivers with Driver Easy:

1) Download and install Driver Easy.

2) Run Driver Easy and click the Scan Now button. Driver Easy will then scan your computer and detect any devices with missing or outdated drivers.

3) Click Update All to automatically download and install the correct version of all the drivers that are missing or out of date on your system.
(This requires the Pro version which comes with full support and a 30-day money-back guarantee. You’ll be prompted to upgrade when you click Update All. If you don’t want to upgrade to the Pro version, you can also update your drivers with the FREE version. All you need to do is to download them one at a time and manually install them.)

After updating your drivers, restart your PC and check if your problem persists.

3. Change your DNS settings

The quality of the DNS server supplied by your ISP is, actually, unknown. But switching to a third-party DNS service such as Google Public DNS may speed your internet activity. Here’s how:

1) On your keyboard, press the Windows + keys simultaneously to open the Run dialog box.

2) Type control and then press Enter on your keyboard to open the Control Panel.

3) Click Network and Internet. (Note: make sure you view the Control Panel by Category.)

4) Click Network and Sharing Center.

5) Click on your Connections, whether it’s Ethernet, Wifi, or others.

6) Click Properties.

8) Click Use the following DNS server addresses:

For Preferred DNS server, type 8.8.8.8
For Alternate DNS server, type 8.8.4.4

Check the box next to Validate settings upon exit and then click OK to confirm the changes.

After applying the changes, launch Modern Warfare to check if this action did the trick.

4. Reinstall shaders

Shaders in Modern Warfare are installed for optimization. But there are circumstances that something’s going wrong with the installation. In this situation, reinstalling shaders can solve the problems you’re having with the game. Follow the instructions below to do this:

1) Boot up your game and click Options at the bottom left corner.

2) Select the GRAPHICS tab. Scroll down and find Restart Shaders Installation.

3) Click RESTART.

This will clear the cache and it will automatically reinstall the shaders. Once it’s finished, play Modern Warfare and you should be able to enjoy the gameplay without getting the transmission error.

5. Disable antivirus software

For players who got the message saying Match Started. Loading level… before receiving the transmission error, you need to disable any antivirus software you’ve installed in case they’re in conflict with your Modern Warfare. This worked for some players, so you might want to give it a shot.

To disable antivirus software, simply click on the up arrow icon near the system tray, right-click on the program, and choose the option to disable or exit the program. Once you’ve done this, play Modern Warfare and test if the message is still popping up.

For further troubleshooting, you can manually add Modern Warfare to the list of bypassing Windows firewall:

1) In the Search box, type windows firewall and click Windows Defender Firewall from the results.

2) From the left panel, click Allow an app or feature through Windows Defender Firewall.

3) Now you need to scroll down until you can find Call of Duty: Modern Warfare.

If your game isn’t on the list, take these steps:

2) Your File Explorer is now opening. Then you can navigate to the drive on which you save your game.

4) Click ModernWarfare.exe and then click Open.

Now play Modern Warfare and you should be able to enjoy the gameplay without getting the infuriating transmission error.

If nothing else has worked, here’s a workaround for you if you play Modern Warfare on Xbox:

Go to My Games and Apps, and hit Menu on the game. Then select Manage game and add-ons.

Uninstall all the older multiplayer data packs, except the first one (6.0 GB Multiplayer pack).
Then install Multiplayer/Special Ops Compatibility Pack and the last one listed as Multiplayer Pack (22 GB).

(Final installs should look like this)

6. If your problem persists…

If everything else had failed, give VPN a try. By connecting to a different server, you’re able to avoid bandwidth throttling. But be advised: lots of problems may arise if you use a free VPN. Therefore, to secure your network, we suggest you use a paid VPN.

Here are the VPN apps we would like to recommend:

NordVPN (30-day money-back guarantee)
Surfshark (7-day free trial)
Cyberghost (free trial available)

After connecting to VPN, launch your game and you should be able to enjoy your gameplay without receiving the error.

That’s it. Feel free to drop a comment below to let us know any fixes listed above worked for you. We also welcome alternate workarounds in case you’ve found one that worked for you.

— Update: 27-02-2023 — us.suanoncolosence.com found an additional article Fix Disconnected due to transmission error on Modern Warfare from the website www.thewindowsclub.com for the keyword disconnected due to transmission error on modern warfare.

In this guide, we are going to discuss how you can fix the error message “Disconnected due to transmission error” in Modern Warfare on Windows 11 or Windows 10 PC. Modern Warfare is one of the best addition to the Call of Duty franchise. It is very popular amongst gamers. However, many players have reported being experiencing an error that pops up saying “Disconnected due to transmission error” while playing the game. The full error message is as follows:

İf you are one of those experiencing the same error, this article is for you. Here, we will be discussing multiple solutions that will enable you to get rid of this error.

Why does my Modern Warfare keep saying transmission error?

Here are the possible causes that might trigger Disconnected due to transmission error in Modern Warfare:

It can be caused due to damaged, corrupted, or missing game files of the Modern Warfare game. In that case, you can simply verify the integrity of game files to resolve the error.
This error might be triggered due to inconsistency with your network connection. Try updating your network drivers and see if the error is fixed.
Your default server might also be the reason behind this error. If the scenario is applicable, change your DNS to Google DNS server to fix the error.
If the shaders installation has gone corrupted in Modern Warfare, it can cause the error in hand. So, to fix the problem, reinstall shaders.
In case your overprotective antivirus or firewall is conflicting with the game, it can cause the error. If the scenario suits you, go ahead and disable your antivirus or firewall. You might also need to allow the Modern Warfare game through your firewall and antivirus to make sure the error doesn’t occur again.

Based on the above scenarios, you can try applying a suitable fix to resolve the error.

How do I fix disconnected due to transmission error status vigorous?

To fix disconnected due to transmission error status vigorous, scan and repair your game files, update your network drivers, change your DNS server, reinstall shaders, or disable your antivirus. If that doesn’t work, use VPN software. We have discussed these fixes in detail below; so checkout.

See: Fix CoD Warzone DEV ERROR 5476 or DEV ERROR 6635.

Fix Disconnected due to transmission error on Modern Warfare

Here are the methods that you can try to fix “Disconnected due to transmission error” on Modern Warfare:

Scan and Repair your game files.
Update your network driver.
Change your DNS settings.
Reinstall shaders.
Disable your antivirus software.
Try VPN software.

Let us discuss the above solutions in detail now!

Read also:

1] Scan and Repair your game files

This error can be triggered due to corrupted, broken, or missing game files of Modern Warfare. So, if the scenario is applicable, you can try verifying the integrity of game files associated with the Modern Warfare game. Thankfully, there is a dedicated Scan and Repair feature provided in the Battle.net launcher that allows you to verify your game files. You can also use it to repair the game files of Modern Warfare.

Here are the steps to scene and repair game files for the Modern Warfare game on Battle.net:

First of all, open the Battle.net launcher and select the Call of Duty: Modern Warfare game.
Next, there will be a gear/settings icon present besides the play button. You need to tap on this option.
Now, click on the Scan and Repair option, and on the next prompt, select the Begin Scan option.
As you do that, it will start scanning and repairing your game files. So, you will have to wait for a few minutes to let the process finish.
Once the verification process is complete, relaunch the game and check whether or not the error is resolved now.

In case you play the Modern Warfare game on Steam, you can follow the below steps to verify the integrity of game files:

First of all, launch the Steam client and click on the LIBRARY option from the menubar.
Now, locate the Modern Warfare game and right-click on it.
Next, press the Properties option and on the next page, go to the LOCAL FILES tab.
After that, tap on the VERIFY INTEGRITY OF GAME FILES… button to start the game files’ verification process.
When the process is done, relaunch the game and see if the error is now fixed.

If this method works for you, well and good. In case it fails to resolve the error, no worries. You can try the next potential fix to get rid of the error.

See: Fix COD Warzone Dev Error 6036 on startup.

2] Update your network driver

If you are being disconnected from Modern Warfare randomly with the error message “Disconnected due to transmission error”, try troubleshooting your network. You need to make sure that you are connected to a stable and good speed internet. Apart from that, do make sure that you have up-to-date network drivers on your PC.

Now, you have different options to update your network drivers which are as follow:

You can update network drivers via Windows Optional Updates.
Visit the official website of your network adapter and download the latest network drivers from there.
If you don’t want to put in any effort to manually update network drivers, you can use a free third-party driver updater to do the same.
You can use Device Manager to do the same.

Upon updating your network drivers, reboot your PC, and then try relaunching the game. Hopefully, the error will no longer be there.

If the error still persists, go ahead and try the next potential fix to resolve the error.

Read: Fix Modern Warfare Warzone’s High CPU Usage on PC.

3] Change your DNS settings

The problem might lie with your DNS server provided by default by your ISP. If indeed the error is caused due to your DNS server, switch your DNS server to a third-party DNS service like the Google DNS server to resolve the error. Here are the steps to change to Google DNS server:

Firstly, evoke the Run dialog box using Windows + R hotkey and enter ncpa.cpl in it to open the Network Connections window.
Now, right-click on your network connection and select the Properties option.
Next, in the Properties window, select the Internet Protocol Version 4 (TCP /IPv4) checkbox and press the Properties button.
After that, select the Use the following DNS server addresses option and enter the following address:
Preferred DNS server: 8.8.8.8
Alternate DNS server: 8.8.4.4
Finally, press the Apply > OK button to save changes.

Now, try launching the Modern Warfare game and see if the error is now fixed or not.

See: Fix Warzone Error code 6 Diver on PC.

4] Reinstall shaders

The shaders are installed and used for optimizing the Modern Warfare game. However, if its installation is corrupted, it might cause errors in the game. If the scenario is applicable, you can try reinstalling Shaders to fix the error. Here are the steps to do that:

Firstly, launch the Modern Warfare game and click on Options to access in-game settings.
Now, go to the GRAPHICS tab and locate the Restart Shaders Installation option.
Next, tap on the above option and then click Restart.
It will now clear the cache and attempt to reinstall the shaders.
When the process is complete, try playing the game and see if the error is now fixed.

5] Disable your antivirus software

In some instances, a few affected users have encountered the error because of the game conflicting with their overprotective antivirus. If the scenario is applicable, try disabling your antivirus or firewall temporarily and then see if the error is gone or not. In case the problem is fixed, you can be sure that your antivirus was the main culprit.

If it works, you can try allowing the game through the firewall. Or, add the game and game launcher’s executables to the exceptions/ exclusion list of your antivirus.

Read: Fix Call of Duty Warzone Dev Error Code 5573.

6] Try VPN software

If one of the above solutions works for you, you can try using VPN software. It might help you bypass any network restrictions or avoid bandwidth throttling. So, try a VPN client like TunnelBear, Windscribe VPN, ProtonVPN, or NordVPN to resolve the error. Connect to a VPN and then relaunch your game. See if the error is now fixed.

Read: Fix Connection Interrupted error in COD Black Ops Cold War.

How do I fix the Disconnected Server on Modern Warfare?

To fix the Disconnected Server error on Modern Warfare, make sure the problem is not from the server-side. If it is not a server error, try restarting your PC and the game, restarting or resetting your router to clear cache, installing pending Windows updates, and troubleshooting network problems. Other than that, you can try changing your region to get away with the error.

Hope this helps!

Now read: Fix Memory Error 13-71 in Call of Duty Modern Warfare and WarZone.

— Update: 18-03-2023 — us.suanoncolosence.com found an additional article Fix: “Disconnected Due to Transmission Error” on COD Warzone from the website appuals.com for the keyword disconnected due to transmission error on modern warfare.

‘Disconnected due to transmission error’ is a reported error on many COD series games (like Warzone, Vanguard, etc.). The error is reported on all the COD-supported platforms like Windows, Xbox, PS4, PS5, etc. A user may face the error upon launching the game or when joining a particular game map. Sometimes statuses like ‘Vigorous’ or ‘dev error’ may also be shown with the error message. Usually, the following type of message may be shown:

Disconnected Due to Transmission Error

In layman’s terms, disconnected due to transmission error means that the game cannot properly communicate with its servers. Due to the variety of supported platforms by the COD games, there can be many reasons that may cause the transmission error but the following can be marked as the main:

Perform a Cold Restart of the Router and Device

You may get ‘disconnected due to transmission’ error in a Modern Warfare game due to a temporary communication glitch between the device and the game servers. Here, performing a cold restart of the router and device may clear the transmission error. Before that, check if any of the external hard drives hold any previous installation of the game or its addons, if so, then check if removing those clears out the error.

Power off the device (system or console) and unplug its power cable from the power source.
Then power off the networking equipment (like a router, extender, etc.) and unplug their power cables from the power source.

Unplug Router from the Power Source
Now wait for 5 minutes and then plug back the router’s power cable to its power source.
Then power on the router and wait till it is properly on.
Now power on the device and once it is properly powered on, launch the problematic game to check if the transmission error is cleared.

If not, check if moving all the game’s data (addons, packs, etc.) to the device’s internal hard drive clears the error.

Update the Problematic Game to the Latest Build

You may encounter the transmission error in a COD game if the game is not updated to its latest builds as it can make the game incompatible with its servers. Here, updating the problematic game (like Warzone) to the latest build may get rid of the disconnected error.

Open the game launcher (like Battle.net) and select the problematic game (like Warzone).
Now expand the game’s menu and click on Check for Updates.

Check for Call of Duty Warzone’s Updates
If a game update is available, download and install it.
Then restart your device and upon restart, open the problematic game to check if it is clear of the disconnected issue.

If the issue persists, check if launching the game from Quick Play clears the error. If not, check if launching the game into the offline mode, and then switching it to the online mode clears the error.

Disable Crossplay in the Game Settings

The Crossplay feature of a COD game enables a player (especially, a console player) to select whether he wants to play the game with users from other platforms (like a PC user). A glitch in the Crossplay module of the problematic game may cause disconnection due to transmission error and disabling the Crossplay feature may clear the error.

Open the game launcher (like Battle.net client) and select the problematic game (like Warzone).
Now expand the game’s menu and select Options.
Then head to the Account tab and disable Crossplay.

Disable Crossplay in the Account Tab of Warzone Options
Now relaunch the game launcher and open the problematic game to check if it is operating fine.

Disable the Game’s Textures

If the problematic COD game is failing to properly parse the game’s textures, then that may result in the transmission issue under discussion. Here, you may fix a disconnected transmission error by disabling the game’s textures. For elucidation, we will discuss the process of disabling the process for the COD Vanguard.

Steer to the game’s Settings in the launcher and head to its Graphics tab.
Now select the option of On-Demand Texture Streaming and disable it by toggling its switch to the off position.

Disable On-Demand Texture Streaming of Vanguard
Then relaunch the game’s launcher and afterward, open the game to check if it is clear of the issue.

Reinstall the Game’s Shaders

If the game’s shaders are corrupt, then that could be the root cause of the error message. In this case, reinstalling the game’s shaders may clear the error.

Steer to the game Options of the COD game and steer to its Graphics tab.
Now locate the Restart Shaders Installation option and once located, click on it.

Restart Shaders Installation of the Modern Warfare
Then, in the popup shown, click on Restart and wait around 5 to 10 minutes till the shaders’ reinstallation completes. The status is shown near the top of the screen.
Once reinstalled, relaunch the problematic game and check if its disconnection problem is solved. In some cases, a user may have to reinstall shaders before a new launch of the game.

Disable the Instant-on Mode of the Console

The Instant-on feature of a console enables a user to quickly power on his console but during this process, it may glitch out a communication feature essential for the problematic game, resulting in the disconnected due to transmission error. In this context, disabling the Instant-on feature of the Xbox console may clear the issue.

Launch the Xbox guide by pressing the Xbox button and head to Profile & System.
Now select Settings and in the General tab, open Power Mode & Startup.

Open the Settings of Xbox
Then select Energy Saving Mode and restart the console after saving the changes.

Open Power Mode & Startup in Xbox Settings
Upon restart, launch the problematic game and check if it is operating fine.

Enable Energy Saving Mode of Xbox

Delete the Players Folder in the Documents Directory of the System

The Players sub-folder in the Call of Duty Modern Warfare folder in the Documents directory of the system holds many configurations of the COD games. If this folder is corrupt, then that could be the root cause of the transmission error.

In this scenario, deleting the Players folder in the Documents directory of the system may clear the disconnection error. Keep in mind that the folder will be recreated on the next game launch with the game’s default configurations but you may lose some of the game’s customizations.

Exit the problematic game (e.g., Warzone) and close its launcher.
Now, right-click Windows and select Task Manager.

Open the Task Manager of the System Through the Quick Access Menu
Then end all the tasks related to the COD game.

End Tasks of Blizzard Battle net App
Now, right-click Windows and open Run.

Open the Run Command From the Quick Access Menu
Then navigate to the following:
```
Documents
```
Open Documents Folder Through the Run Command Box
Now open the Call of Duty folder and right-click on the Players folder.

Delete Players Folder in Documents
Then select Delete and afterward, confirm to delete the Players folder.
Now open the game’s launcher and launch the game.
If the game tries to install items (like Shaders), let it install, and afterward, check if the game is clear of the transmission error.

Edit the Graphics Settings of the Game

The problematic game might show the disconnected due to transmission error if the graphics settings of the game are not compatible with the device or system. Here, editing the graphics settings of the game may clear the transmission error.

Steer to the game’s Settings and head to its Graphics tab.
Now, in the Display section, set Custom Frame Rate Limit to Custom.
Then set the Gameplay Custom Framerate Limit to 100 and Menu Custom Framerate Limit to 30.
Now set the Out of Focus Custom Framerate Limit to 30 and V-sync to Disabled.

Change the Custom Framerate Limit of COD Games
Then save the changes made and launch the game to check if it is clear of the transmission error.
If not, check if setting the Gameplay Custom Framerate Limit to the refresh rate of the monitor (like 144 FPS) clears the error.

Change the DNS Settings of the Console

If the DNS server of the ISP is failing to properly translate the web addresses related to the game’s servers, then that could be the reason for the game’s transmission error. Here, changing the DNS settings of the console or system may clear the error.

Launch the Xbox Settings and open All Settings.
Now select Network and open Advanced Settings.

Open Network in the Xbox Settings
Then click on DNS Settings and open Manual.

Open Advanced Network Settings of Xbox
Now enter the following:
```
Primary DNS 8.8.8.8 Secondary DNS 8.8.4.4
```
Open Manual DNS Settings of Xbox
Then save the changes and click Continue to test the Internet connectivity.
If the Internet is working fine, then launch the problematic game and check if it is working fine.
If not, check if properly forwarding the game’s required ports solves the problem.

Clear the Alternate Mac Address of the Console

The transmission error of a COD game on an Xbox console could be a result of the incompatible configuration of the Alternate Mac Address of the Xbox. Here, clearing the Alternate Mac Address of the Xbox console may clear the disconnection error.

Firstly, exit the problematic game on the console and launch its Guide.
Now open Profile & System and select Settings.
Then, in the General tab, select Network Settings, and then, in the right half of the menu, open Advanced Settings.
Now in the resulting window, select Alternate Mac Address and click on Clear.

Select Alternate Mac Address in the Advanced Settings of Xbox
Then select Restart and wait till the console is restarted.

Clear Alternate Mac Address of Xbox
Afterward, launch the problematic game and check if it is operating fine.

Reinstall the Game’s Data Packs

If any of the game’s data packs are corrupt or incompatible with the game, then that may result in the game’s disconnected due to a transmission error.

Firstly, close the Modern Warfare app and then hover over the game in the Xbox dashboard.
Now press the Option key and open Manage Game and Add-ons.

Select Manage Game and Add-ons for the Call of Duty Game

Now click on Storage and uncheck the following:

Compatibility Data Pack 1 (18GB) Compatibility Data Pack 2 (8 GB) MP2 Pack (9 GB) Multiplayer Pack 2(10.1MB) Multiplayer Pack 3 (3.4 GB)

Then save the changes and restart the console to check if the issue is resolved.
If not, remove all the game packs and restart the console.

Upon restart, install the following one by one (make sure to restart the console after the installation of each pack):

Base Game (91 GB) Multiplayer and Special Ops Pack (6.7GB) Multiplayer Pack (6.0GB) Multiplayer Pack 2 (22.1GB) High Resolution Texture Pack 1 (23.6 GB) Champaign Pack (11 GB)

Installed Packs of the COD Game

If not, check if reinstalling all of the above except the following clears the issue:
```
High Resolution Texture Pack 1 (23.6 GB) Champaign Pack (11 GB)
```
If that fails, check the region in the game’s disc (if being used). If it is like Saudi, change the language to Arabic, location to Saudi Arabia, redownload the Multiplayer Pack 2 (22 GB) & Special Ops Compatibility Pack (6.7 GB) and then check if the transmission error is cleared.

Reinstall the Problematic Game

If none of the above worked, then the transmission error could be a result of the corrupt game installation. In such a case, reinstalling the problematic game may clear the disconnection error. For illustration, we will discuss the process of reinstalling Warzone on a Windows PC. Before proceeding make sure to back up the game’s data (screenshots, etc.).

Launch the Battle.net launcher and select Warzone.
Now, click on the gear icon/Settings and select Uninstall.

Uninstall Call of Duty Warzone
Then confirm to uninstall the Warzone game and wait till the Warzone’s uninstallation process completes.
Now restart the PC and upon restart, reinstall Warzone. Make sure the game and all of its related data are being installed on the console’s internal drive (preferably, an SSD). The game’s reinstallation may take some time and data (100+ GB data) to complete.
Once the game is reinstalled, launch it and check if the transmission error is cleared.

Reset the Console While Keeping Games and Apps

If there is corruption in the console’s firmware then that could be the reason for the disconnection issue at hand as the Console’s modules may fail to perform the required operation. Here, resetting the console while keeping games and apps may clear the transmission issue. For illustration, we will discuss the process of resetting an Xbox console while keeping its games and apps.

Launch the console’s Guide by pressing the Xbox button and then open Profile & System.
Now select Settings and open System.
Then click on Console Info and select Reset Console.

Open Console Info of Xbox
Now click on Reset and select Reset and Keep My Games & Apps.

Open Reset Console of Xbox
Then confirm to reset the console and wait till the reset process completes.

Reset and Keep My Games & Apps of Xbox
Once done, hopefully, the disconnected due to transmission error would be cleared.

If not, you may have to reset the console to its factory defaults (do not forget to back up the data). If that did not work, check if using a new Activision account with the console after resetting it to the factory defaults solves the problem (if the account was shadowbanned, then that could be the root cause of the error). If that did not work, check if reinstalling the console’s firmware through a USB clears out the error.

Source: https://www.minitool.com/news/disconnected-due-to-transmission-error.html