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  • Guide to Fix Call of Duty Memory Error 13-71

    Several users have reported the Call of Duty Memory Error 13-71 popping up on their computers and consoles, are you among them? Here’s a quick guide to explain the reason behind COD error 13-71 and the easiest way to resolve it right away.

    You sit down after a long day, hoping to unwind by playing some fast-paced first-person shooter with your pals online, and the game locks you out completely. Nothing could be more frustrating than seeing the Call of Duty Memory Error 13-71 pop up every time you try to play an online multiplayer, which seems to surface randomly for users out of nowhere.

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    How to Fix Call of Duty Error Code 664640

    Guide on How to Fix PS4 Error NP-36006-5

    How to Fix Call of Duty Memory Error 13-71

    By most accounts, the error 13-71 in Call of Duty does not have to do with the server issues, but the game or profile itself. Since the issue arises in the multiplayer mode when either joining a Regiment or being added to it directly, it is safe to say that the connection issue has to do with the user’s server side of things, and not the central server.

    Fix #1 – Restart the game and system

    Start things off by giving the game, as well as the console you are playing it on, a quick refresh. Simply restarting the game and the system you are running it on, will reset the connection and temporary files, which should resolve most connectivity issues instantly.

    Enable or Disable Open Xbox Game Bar using Controller in Windows 10 | Tutorials
    1. Exit Call of Duty and return to the system menu.
    2. Press the Power button and turn off the system.
    3. Now, press the Power button again to reboot the system.

    Launch Call of Duty to see if the issue has been resolved.

    Fix #2 – Log in using another account

    Several users have reported that the Memory Error on Call of Duty seems to be tied to the Xbox Live or PlayStation Plus account that you are using. A tried and tested method to resolve it is by signing out of the user account, sign in using another account and then trying to launch the online multiplayer to see if the issue has been fixed.

    Learn how to change your gamertag on an Xbox One in just a few simple steps
    1. Go back to the main menu and create a new Gamertag on your Xbox or PlayStation.
    2. Launch Call of Duty and access the game with your newly created account.
    3. Press the Xbox or PS button and switch to the old Gamertag with the one you faced the error 13-71.
    4. Before you proceed any further, use the Social menu to leave any Regiment that you are a part of.

    Relaunch the game and you should now be able to move past the error screen.

    Fix #3 – Disable Crossplay from the Settings

    Even if changing the Gamertag does not seem to resolve the Call of Duty Memory Error 13-71 for you, the last resort is to disable a setting called Crossplay, which is essential to play online in COD.

    How to Turn off Crossplay on Warzone
    1. Launch Call of Duty and go to offline mode when the error code appears.
    2. Head to the Account Settings and find the Crossplay feature listed there.
    3. You should Disable Crossplay from the settings and head back to the main menu.
    4. Now, launch the online mode of COD, at which point it will ask you to enable Crossplay.
    5. Go back to the previous screen and open Social menu to leave the Regiment you are a part of.

    Once you have left the Regiment, it should automatically resolve the error.

    Final Words

    The error is more common among Xbox and PlayStation users who try connecting to the online servers, but fail to do so. The only option provided is to launch the game in offline mode, or exit the game entirely. Based on reports from users, the error pops up due to the Regiments, which is a feature that allows creating clans within the online version of Call of Duty. Do let us know which of the fixes above seemed to work best for you.

  • Guide for Fixing Dev Error 6034 Modern Warfare

    Guide for Fixing Dev Error 6034 Modern Warfare

    A recent discomfort has just made its way for most Call of Duty Modern Warfare lovers out there. According to the sources, many players have reported an issue where their games are getting crashed suddenly with an error message “Dev Error 6034.”

    Occurring generally due to the presence of any unreadable or corrupted data within the game, the error is not limited to any specific platform. To help you out, we have prepared the list of best fixes that can resolve the dev error 6034 on desktop and consoles.

    fix dev error 6034

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    How to Fix Dev Error 6034 in your PC

    # Fix 1: Have your Graphics Driver Updated

    gpu update to fix error 6034

    Outdated or broken GPU drivers play a significant role in making your favorite game crash suddenly. So, before moving into the complex methods of getting the Dev Error 6034 fixed, make sure to have your graphic drivers updated. Many a time, this simple approach will help you resolve the error instantly.

    • Head over to the official website of your GPU manufacturer
    • Search for your GPU model
    • Download and install the latest version available
    • Restart your system

    # Fix 2: Replacing the Corrupted File (s)

    modern warfare fix error by removing corrupted files

    If updating the graphics driver didn’t help resolve the issue, you need to get yourself into an advanced approach of finding and fixing corrupted or broken files within the game.

    • The very first thing that you need to do is find and open the Call of Duty Modern Warfare installation folder.
    • Once you are in the folder, search for the following files: “.Product,” “vivoxsdk_x64.dll,” “Modern Warfare Launcher.exe,” “Launcher.db,” and “patch.result” and delete them.
    • After that, open Battle.net
    • Hover over to the settings cog, and look for “options”, click on that.
    • The next thing you need to do is select the “Scan and Repair” option and begin the scan.

    The files will then get repaired, and you will be able to play the game again.

    How to Fix Dev Error 6034 in your Xbox

    # Fix: Get Rid of the Multiplayer Game Packs

    solve error code 6034

    Solving Dev Error 6034 in consoles takes a fresh approach altogether. Most times, users have discovered that removing specific game packs can help resolve the issue conveniently.

    • Launch your Xbox and select the Call of Duty Modern Warfare
    • Then press the menu button and from the list, select “Manage Game and Add-Ons,” and if necessary, select the “Manage Installation on External Drive” option.
    • Once done, scroll down and make sure you unselect the MP2 Pack and the Multiplayer 3 Pack.
    • Restart your console and check if your game is working fine

    How to Fix Dev Error 6034 in your PS4

    # Fix: Uninstall Multiplayer Game Packs that Might Cause Issue

    solve error code 6034

    • Hover to the game on your console
    • From the main menu, make your way to the “Options” tab.
    • Navigate to “General” and scroll down to select the “Game Installs.’
    • Select the recent multiplayer packs and click uninstall.
    • Once the process is complete, restart your device.

    Final Words

    If you find yourself in trouble even after applying these fixes, the last thing left for you is having your game reinstalled. Whether you face the issue on your desktop or console, removing the previous file and installing a fresh one will help you instantly resolve the error. However, we recommend you try the fixes mentioned above appropriately and avoid the hassles of reinstallation.

  • Guide for Fix Valorant Error Code 39

    Guide for Fix Valorant Error Code 39

    Having issues with Valorant Error Code 39? Let us walk through the solutions.

    fix valorant error code 39

    Valorant from Riot Studios is one of the most popular first-person tactical shooter games that are available right now. Despite being fairly new, the game has already started gathering attention worldwide. However, just like any other game, Valorant is home to certain annoying bugs as well, one of which is labeled as the error code 39.

    The Valorant Error Code 39 is an issue that majorly corresponds to connectivity failures. When a user encounters this issue, he/she receives an error message on the screen with little to less detailing. Having said that, finding the appropriate fix might get a bit challenging. 

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    Best Ways to Fix Valorant Error Code 39:

    # Fix 1: Restart Your Game and Try Again

    restart game to solve error39

    Restarting your game is the very first thing that you can do to solve the error code 39. Besides doing so, you can also go on and restart your device. Restarting your device will help you resolve some other temporary connectivity issues that might also play a crucial part in resolving the error code 39.

    • Hit the required button of your controller/keyboard to get yourself in the game’s main menu
    • From there, find and click on the Exit option
    • Restart your device
    • Once your device boots up, log in to your game once again.

    # Fix 2: Make Sure Your Internet Connection is Up and Running

    check internet

    Poor internet connectivity might also end you up facing various in-game issues like the error code 39. So, it is crucial to make sure your internet connection is well optimized. To check if your internet is working fine enough, head over to your browser and start browsing along with different websites. If you seem to face any trouble, try out the following fixes.

    • Restart your router or whatever device you use for accessing the internet. Make sure you unplug all the internet cables and put them back before continuing with the restart process.
    • If nothing seems to work out, contact your internet service provider.

    # Fix 3: Wait for the Game Servers to Get Fixed

    server issue

    One of the prime reasons for the Valorant Error Code 39 is the game servers getting down for technical failures of some sort. The only thing you are left to do in such a scenario is to have patience and wait until the issue is resolved. As soon as the game servers get back to life, you will be able to start enjoying your game once again. The best way of keeping track is to get updates from the official Twitter page on the Valorant server status.

    Final Words

    Considering the fact that Error Code 39 is sort of a connectivity issue, the steps mentioned above can come in real handy for resolving the same. However, if it is the game servers that correspond to the major part of the issue, you can expect future updates from Riot Studios that shall fix the error once for all.

  • Guide on How to Fix PS4 Error NP-36006-5

    Being stuck with the PS4 error NP-36006-5 can put a wrench in your console gaming experience. Here’s everything you need to know about this annoying issue and how you can resolve it the easy way.

    The Japanese tech giant Sony has been a major force in the gaming industry, all thanks to the PlayStation brand. The current jewel of the crown, the PlayStation 4 is easily one of the highest-selling gaming consoles you can find out there.

    However, no matter how much Sony strives for the best and well-rounded the software may be, it isn’t perfect. Over the years, users have reported plenty of issues with the console, with the PS4 error NP-36006-5 being a recurring one.

    What does the PS4 error NP-36006-5 mean?

    Based on the reports, this critical issue with the PlayStation 4 occurs when using the PSN app to enjoy multiplayer games online. The entire error seems to read as follows “(User Name) will be logged out of the PS4 because an error has occurred (NP-36006-5)”.

    The PS4 error code may also appear if you abruptly unplugged the gaming console with the game still running. Doing this could cause the user files to crash and become corrupt, which in turn prevents you from launching the game.

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    How to Fix PS4 Error NP-36006-5

    Since this particular error seems to be common among PS4, Sony has directly addressed the issue on its website. All you need to do is follow the steps enlisted below, and you should be able to fix the error code problem in no time.

    Create a backup of the user data on your PS4 console

    1. Launch the PS4 menu and open Settings.
    2. Navigate to System – Back Up and Restore menu, and choose Backup PS4.
    3. Save Trophies by making sure they are all synced to the PSN.

    Remove the User Profile

    1. Head back to the Settings menu and find the Users
    2. Select the user profile having issues with and Delete
    3. Now create a new user profile again and restore the saved data from the backup.

    Once you have created the new user profile on the PlayStation 4, go ahead and launch any game. You will most likely be able to get past the launch screen without any error message popping up.

    How to Fix PS4 Error Code NP-36006-5 by Deleting Trophies

    Users on the community forums for PlayStation 4 also suggest that the specific error could be related to the trophies you’ve earned in-game. If the trophy is unable to sync with the PSN server, it will give back the error code.

    1. Head over to the Trophy
    2. Pick the game with 0 trophies and press the Options
    3. Press the Delete button from the pop-up screen on the right.

    Final Words

    Although the PS4 error NP-36006-5 might seem like a bigger problem than it is, resolving it fairly simple. By implementing the steps mentioned above, you should be able to get back to gaming on the PlayStation 4 in no time.

    We hope that the solutions mentioned above will help you fix the PlayStation Network error with ease. If you’ve got a fix that works better than the ones we’ve highlighted above, be sure to mention it down below in the comments, and we’ll test it out for the readers.

  • Everything You Need to Know About Fixing HBO Max Error Code 420

    Everything You Need to Know About Fixing HBO Max Error Code 420

    fix HBO Max error code 420

    “HBO Max Error Code 420”, facing a similar issue? Let’s walk through the solutions then.

    HBO Max is one of the most popular video-on-demand streaming services in America. But alongside users admiring their favorite shows, many even end up facing various errors. Among many, the most popular one is the error code 420. However, the good news is, you can get rid of the error easily by implementing some quick fixes.

     How to Fix HBO Max Error Code 420

    Fix #1: Ensure Your HBO Max is Updated

    update hbo max to resolve error code 420

    • Head to the App Store on iOS or Google Play Store on Android devices
    • Hover over to the Update on iOS or My apps and games section on Android devices
    • Look if the HBO Max app is yet to get updated to the latest version, if so click on Update
    • Wait until the app gets updated and then restart your device to be on the safer side.

    Fix #2: Restart the HBO Max App

    Suppose you are facing the error code 420 even after getting the latest version of the app. In that case, the next thing you can do is restart the app. Just like most the cases, restarting is one of the primary ways of troubleshooting errors. After you get your HBO Max restarted, there is a probability of the error code 420 getting resolved; if not, proceed to the next fix.

    Fix #3: Make Sure to Check Your Location

    As per the current scenes, HBO Max is limited to the users in the US and some of its territories only. So, the chances of you facing the HBO Max Error Code 420 are high if you seek to use the service from other regions outside of the US. In that case, you can seek other solutions that genuinely help in accessing HBO Max content from other parts of the world without any issue.

    Fix #4: Disable VPNs 

    Disable VPN to resolve error code 420

    • Go to the settings of your device
    • Under the general section, you will find an option called VPN, click on that
    • Toggle the switch to turn the VPN status to “Not Connected”
    • Once done, restart your device

    Fix #5: Have Patience

    Considering the heavy traffic that goes in the HBO Max every day, server failures are among the common issues. As a result of these failures, users often face the 420-error code. The best thing you can do in that situation is having patience and wait till the server issues get resolved. You can check the status of such issues on varied forums or Downdetector.

    Final Words

    Here you have the list of best approaches that can help you get rid of HBO Max error code 420. However, if none of the about mentioned fixes helped you get rid of the error code, the last thing that you can do is communicate with the official support team. To do this, you can visit Contact HBO and let the team of experts know about the issue you are dealing with. You can then expect the support team to come with a solution real soon.

  • Why is My Vodafone SMS not Working on Mobile?

    Why is My Vodafone SMS not Working on Mobile?

    Stuck on failed notifications leading you to wonder “why is my Vodafone SMS not working on phone?” Here’s all that you need to do to get back on the horse and texting right away.

    One of the oldest network carriers in the United Kingdom, Vodafone has also spread across the world in regions such as India and Africa. Although the service provider is revered for its widespread coverage and support, there have been times when Vodafone customers have reported issues in cellular connectivity and data usage.

    Why is My Vodafone SMS not Working?

    One such roadblock experienced by users has been the SMS service, where customers of the Vodafone network are unable to send or receive SMS texts. The issue has led many users to wonder “why is my Vodafone SMS not working” and although there are a few fixes you can try to resolve this issue, there isn’t a universal one.

    How to fix SMSC Update Error in Android? - Isrg KB

    From the settings not being configured the right way, to the SMSC settings not updated, there are plenty of reasons why the SMS issue could exist on your Vodafone SIM card, and here’s a guide to fix it all.

    How to Fix Vodafone SMS Issues

    Fix #1 – Set the SMSC in Settings

    A common fix recommended by experts, you can update the SMSC (short message service center) settings from the configuration menu on your mobile phone. In most cases, the SMSC is updated automatically by the carrier, but in the event it fails to do so, here’s how you can do it manually:

    How to check for your SIM card service center number on message app settings - Messages Community

    1. Head to the Phone app on your mobile and open the Dialer screen menu.
    2. Type in the number *#*#4636#*#* and wait for the configuration screen to launch.
    3. Tap on Phone Information and scroll down to find the SMSC option in the list.
    4. Press the Refresh button and wait to see the result.
    5. If the refresh error message is displayed, press the Update button and enter the SMSC number manually.

    Note: You can find a database of the SMSC number for you GSM mobile from the following list and add them manually.

    Fix #2 – Set the SMSC Number from the Messages App

    If you have used any other messaging app apart from the default SMS app on your Android or iOS devices, the error for Vodafone SMS can occur. You will need to manually add the service center number to the SMS app, which will then allow the network carrier to send and receive text messages from the app.

    1. Open the Messages app on your mobile phone.
    2. Pressing the Settings button and find SMS Center option as you scroll down.
    3. Tap on the option and enter the phone number “+447785016005” and hit the OK button to save the details.
    4. Press the Home button and now trying send an SMS to see if the issue is resolved.

    The SMSC number we have used in the steps above is mentioned on the official Vodafone UK troubleshooting page and may differ based on your region.

    Final Words

    Apart from these quick fixes that will help you get the SMS feature on your Vodafone SIM up and running, you may need to do some basic fixes too. For instance, many users who complained about “why is my Vodafone SMS not working on the phone?” were also able to fix it by simply rebooting the device or performing a network reset. Do let us know in the comments, which fix worked best for you.

  • How to Delete McAfee from Mac

    How to Delete McAfee from Mac

    Tired of the McAfee antivirus repeatedly pestering you with notifications and pop-ups on the side? Here’s how you can delete McAfee from the Mac OS system the easy way.

    For as long as computers have existed, so has been corrupted software that lands viruses and malware on to them. While Windows and Linux have been plagued by all sorts of adware, malware, trojans, and viruses, Apple has kept macOS X fairly safer in comparison. The company was able to do so by creating a closed ecosystem and controlling every aspect of the operating system, which continues to do to this day.

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    However, this does exempt macOS X from viruses, which is why third-party antivirus software developers also extend their services to Mac users. Over the years, antivirus software providers have increasingly become intrusive, which not only download other add-on services automatically but also ruin the user experience with unsolicited pop-ups and notifications. At times, McAfee has also been accused of such deeds, which is why you would want to know how to delete McAfee from Mac machines.

    Method 1 – Remove McAfee from macOS using the Finder

    The first and most straightforward way to uninstall McAfee antivirus from the macOS X system is just how you would uninstall any other app.

    How to Uninstall McAfee

    1. Close any other program that is running on your macOS computer.
    2. In the Dock bar, click on the Applications menu.
    3. Scroll down to find the McAfee Internet Security Uninstaller and click on it.
    4. Click on Continue and enter the administrator password to confirm your action.
    5. The uninstallation process will now begin, and you can press Finish after the process is completed.

    Method 2 – Delete McAfee from Mac with Terminal

    While using the Applications menu helps you remove most apps, McAfee tends to leave behind apps and files even after uninstalling the main module. A rather expert method to completely remove McAfee from your computer is using the Terminal window with the following steps:

    1. Launch the Spotlight tool and search to open a Terminal window.
    2. In the Terminal window, type in the following line of code:
      sudo /Library/McAfee/cma/scripts/uninstall.sh
    3. Hit the Enter button and then type in the administrator password into the window.
    4. Follow the on-screen instructions to delete McAfee from Mac computer once and for all.

    Finally, reboot the macOS computer, and you will have finally removed from the Mac computer for good.

    Method 3 – Manually Delete McAfee System Files

    One final method to get rid of McAfee software from macOS X computers for good is to select each and every app file and delete it.

    Take Correct Steps to Uninstall McAfee for Mac | WordCamp Mid-Atlantic

    1. Launch the Finder app and click on Go to and select Go to Folder from the drop-down menu.
    2. Search in the following directories for McAfee-related files and delete all of them:
      /Library/Preferences/
      /Library/Application Support/
      /Library/Caches/
    3. Now, open the Trash app and click on Secure Empty Trash so that you remove all of the files stores there.

    Final Words

    The way McAfee has designed the antivirus software, allows add-ons to operate separately from the central service. While the first method may work well on removing the add-ons, you may need to use the more advanced solutions to remove every trace of the antivirus software from the macOS X system.

  • Guide to Fix Call of Duty Memory Error 13-71

    Guide to Fix Call of Duty Memory Error 13-71

    Several users have reported the Call of Duty Memory Error 13-71 popping up on their computers and consoles, are you among them? Here’s a quick guide to explain the reason behind COD error 13-71 and the easiest way to resolve it right away.

    You sit down after a long day, hoping to unwind by playing some fast-paced first-person shooter with your pals online, and the game locks you out completely. Nothing could be more frustrating than seeing the Call of Duty Memory Error 13-71 pop up every time you try to play an online multiplayer, which seems to surface randomly for users out of nowhere.

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    How to Fix Call of Duty Memory Error 13-71

    By most accounts, the error 13-71 in Call of Duty does not have to do with the server issues, but the game or profile itself. Since the issue arises in the multiplayer mode when either joining a Regiment or being added to it directly, it is safe to say that the connection issue has to do with the user’s server side of things, and not the central server.

    Fix #1 – Restart the game and system

    Start things off by giving the game, as well as the console you are playing it on, a quick refresh. Simply restarting the game and the system you are running it on, will reset the connection and temporary files, which should resolve most connectivity issues instantly.

    Enable or Disable Open Xbox Game Bar using Controller in Windows 10 | Tutorials

    1. Exit Call of Duty and return to the system menu.
    2. Press the Power button and turn off the system.
    3. Now, press the Power button again to reboot the system.

    Launch Call of Duty to see if the issue has been resolved.

    Fix #2 – Log in using another account

    Several users have reported that the Memory Error on Call of Duty seems to be tied to the Xbox Live or PlayStation Plus account that you are using. A tried and tested method to resolve it is by signing out of the user account, sign in using another account and then trying to launch the online multiplayer to see if the issue has been fixed.

    Learn how to change your gamertag on an Xbox One in just a few simple steps

    1. Go back to the main menu and create a new Gamertag on your Xbox or PlayStation.
    2. Launch Call of Duty and access the game with your newly created account.
    3. Press the Xbox or PS button and switch to the old Gamertag with the one you faced the error 13-71.
    4. Before you proceed any further, use the Social menu to leave any Regiment that you are a part of.

    Relaunch the game and you should now be able to move past the error screen.

    Fix #3 – Disable Crossplay from the Settings

    Even if changing the Gamertag does not seem to resolve the Call of Duty Memory Error 13-71 for you, the last resort is to disable a setting called Crossplay, which is essential to play online in COD.

    How to Turn off Crossplay on Warzone

    1. Launch Call of Duty and go to offline mode when the error code appears.
    2. Head to the Account Settings and find the Crossplay feature listed there.
    3. You should Disable Crossplay from the settings and head back to the main menu.
    4. Now, launch the online mode of COD, at which point it will ask you to enable Crossplay.
    5. Go back to the previous screen and open Social menu to leave the Regiment you are a part of.

    Once you have left the Regiment, it should automatically resolve the error.

    Final Words

    The error is more common among Xbox and PlayStation users who try connecting to the online servers, but fail to do so. The only option provided is to launch the game in offline mode, or exit the game entirely. Based on reports from users, the error pops up due to the Regiments, which is a feature that allows creating clans within the online version of Call of Duty. Do let us know which of the fixes above seemed to work best for you.

  • How to Fix Call of Duty Error Code 664640

    How to Fix Call of Duty Error Code 664640

    Is the Call of Duty error code 664640 putting a dent in your COD: Warzone online gaming experience? Here’s a guide that explains why the COD multiplayer issue surfaces at times, and what you can do to counter it.

    Defining an entire generation of FPS (First-Person Shooter) games that have been played on consoles and computers for almost two decades, the Call of Duty franchise isn’t an insignificant one. While the game has improved in terms of graphics, online multiplayer performance, and gameplay features, there are certain issue with Call of Duty that have carried on from the older versions.

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    Why Does COD Error 664640 Occur?

    One recurring issue seems to be with the online multiplayer, where Call of Duty error code 664640 seems to the get in the way of users. This particular issue with the game seems to be related to the network connectivity, barring gamers from connecting to the team matches and online multiplayer mode. There could also be issues related to the network settings of the computer or gaming console, along with DNS settings configuration.

    How to Fix Call of Duty Error Code 664640

    Fix #1 – Do a Quick Boot Cycle

    The age-old way to fix issues with any gadget or software is to turn off the system and then launch it again. The same hot fix can be applied to Call of Duty as well, where the first recommendation by most experts is too perform a reboot cycle on the system.

    Resolving a Windows Restart Loop – Part 3 | CloudAffinity

    1. On PlayStation and Xbox consoles, press and hold the Power button to perform a hard reboot.
    2. On the PC, exit the Call of Duty game and reboot the Windows system.
    3. Additionally, reboot the wireless router by unplugging it for 30 seconds and then re-plugging it to reset the network connection.

    Fix #2 – Check the Server Status

    If the Call of Duty error seems to have appeared out of nowhere, with no major change done by you to the network settings, maybe your system isn’t to blame. When browsing the user forums, we noticed a significant number of users reporting the Call of Duty error code 664640 and it seems to be the developers who are at fault.

    1. Open the web browser and head to the Activision Online Services
    2. Make sure that the network servers are operational and the status is set to Online.
    3. Additionally, keep a close look on the Infinity Ward Twitter page to know the server status live.

    Fix #3 – Repair the Game Files

    If you have been playing the game for quite a while, you’re bound to accumulate update files over time. Some of these temporary files can become corrupt at times, which can, at some point, lead to server issues and error codes such as 664640 to pop up. However, this option is available only for PC users who can use the Blizzard Launcher to scan and repair the game.

    How to fix fatal error in Call of Duty: Black Ops 4 | Shacknews

    1. Head over to the Blizzard Launcher on the computer.
    2. Find Call of Duty from the game library and open it.
    3. Press the Options (gear icon) on the game and click on it.
    4. Click on Scan and Repair and then press Begin Scan to start the process.

    The scanning process will be completed and Blizzard Battle.net will ask you to restart the computer to bring the changes into effect.

    Fix #4 – Change the DNS Address

    This particular fix seems to work for both, Windows and console users who have encountered the Call of Duty error code 664640 on their systems. Change the DNS address of the device has been reported to fix the issue for several users, and here’s how you can do it:

    Windows 10 Configuration – OpenDNS

    1. Head to the Networking Settings on the PC and console.
    2. Select the option to Add custom or manual DNS address (8.8.8.8 as Primary & 8.8.4.4 as Secondary).
    3. Save the DNS settings and restart the system to see if the issue is resolved.

    Final Words

    Were you able to solve the issues with Call of Duty with the steps we have listed above? Do share your experience with the error code 664640 in the comments section below.