Many users of Xbox One and personal computers report that they face the dev error 6034. Most probably, this error occurs due to unreadable or corrupted game data. The dev error 6034 on Xbox refers to that you have installed the outdated or conflicting add-ons or data packs of Modern Warfare in your console. Additionally, the corrupt installation can be the cause of this error. So when the user struggles to launch the Modern Warfare on Xbox, he faces the fix dev error 6034. Further, some users face the Xbox Error Code 0x97e107df. The users report that the dev error 6034 occurs on all the Modern Warfare maps. Moreover, this error relates to corrupted or unreadable Warzone game data and Call of Duty Modern Warfare. Moreover, Activision merges map packs with the previous updates. Therefore, when your game searches out for some particular maps, it will find them in the wrong place. Hence, you will face the dev error 6034. In this article, we tell you some effective solutions to fix this error. XBOX What Are The Solutions to Fix Dev Error 6034 Xbox? First, make sure that whether the game files are split between external and internal storage or not. If yes, then try to consolidate the game files to the internal storage. This step can resolve this error. Now, apply these solutions if the error exists: \tNavigate to the installation folder for Warzone or Call of Duty Modern Warfare on a personal computer \tDelete the following files in the install directory: \t.product \t.patch.result \tvivoxsdk_x64.dll \tModern Warfare Launcher.exe \tLauncher.db \tThen open the Battle.net launcher. Use Scan and Repair tool. Hence, it will use Battle.net\u2019s Scan and Repair option to replace the missing files with working files. How to Fix Xbox Dev Error 6034 in Modern Warfare? You will have to remove various packs to fix this error. The previous 22GB Multiplayer Pack will replace some other data that was download in the past. This multiplayer pack has installed both of them. Ultimately, it leads towards the dev error 6034 on Xbox. Steps to Fix The Dev Error 6034 in Modern Warfare Follow these steps to fix the dev error 6034 in Modern Warfare: \tLaunch Call of Duty: Modern Warfare \tSelect \u2018Options\u2019 when you go to the main menu. \tNavigate to the \u2018General\u2019 tab. \tScroll down and choose \u2018Game Installs.\u2019 Solution No. 1-Uninstalling Data Packs And Add-Ons Modern Warfare may show the error due to conflicting add-ons or data packs. So you can uninstall the game add-ons or data packs to fix the error. When you uninstall the add-ons, you may be asked to purchase the game. Hence, clear the mac address of the Xbox in this case to solve the issue. Follow these steps to uninstall the add-ons or data packs: \tPress the Options button on the controller. It will open the game menu. \tSelect Manage Game And Add-Ons \tOpen Add-ons and see the checkboxes of the following data packs: \tCall of Duty Modern Warfare MP2 Pack of 9.1 GB \tCall of Duty Modern Warfare Multiplayer Pack 3 of 3.4 GB \tSave all the changes. Then restart the Xbox console. \tSee if the Xbox still shows the dev error 6034. \tIf the problem is still there, highlight the content that you want to uninstall. Removing The Data Packs Then remove these data packs: \tData Pack 1 is needed to have access to multiplayer, spec ops, and campaign. \tYou need Campaign Pack 1 to play the campaign. \tCampaign Pack 2 is needed to play the campaign. \tMultiplayer Pack 2 is required to play multiplayer. \tSpecial Ops Pack is needed to play Special Ops. \tYou need Special Ops Pack 2 to play Special Ops. \tYou require Survival Pack to play Special Ops Survival. Then select \u2018uninstall\u2019 and confirm this option. Luckily, if the solution mentioned above works for you, there is no need to apply this solution. Removing Data Packs Installing Some Data Packs But if the above method does not work, install the following data packs: \tMP Packs \tBase Game \tMP and SPEC Ops Pack \tSpec Ops Pack \tHigh Res Pack 2 \tHigh Res Pack 3 \tCampaign Pack \tCampaign Pack 2 \tOperator Pack \tSpec Ops Pack 1 \tSpec Ops Pack 2 But if this solution does not work, then see if uninstalling all the data packs other than the following solve the issue: \tMultiplayer (MP) Data Pack \tMultiplayer and Special ops pack \tMP 2 Except for the first multiplayer pack of 6GB, uninstall all the previous multiplayer data packs. Furthermore, delete the Warzone Data Pack 1 and Data Pack 2. Then install the new multiplayer pack of 22GB. Also, install new Spec Ops and multiplayer combat pack. By following these steps, you will access the multiplayer data pack without showing any error. If you see that the error is still there, then reinstall the multiplayer pack. Probably, it will resolve the issue. Reinstalling The Modern Warfare Game If the installation of Modern Warfare is corrupt, you may face the dev error 6034 on Xbox. Therefore, you can reinstall the game to fix this error. You will have to download 200+ GB of data. Moreover, you should back up the necessary game data. Follow these steps to reinstall the game: \tGo to the Games in Xbox settings. \tSelect Modern Warfare. \tPress Menu and then select Uninstall. \tSelect Uninstall All for the confirmation of uninstalling the game. \tWhen the game is uninstalled, restart your console. Then after the restart, reinstall the Modern Warfare game. Further, make sure to install the following only: \tMultiplayer Pack \tMultiplayer Pack 2 \tModern Warfare Base Game \tMultiplayer and Special Ops Pack \tFinally, launch the game. Monitor if the error is still there or not. Call of Duty Modern Warfare The Dev Error 6034 in Multiplayer Multiple users get Warzone dev error 6034 on Xbox One. They receive this message, \u2018You have been disconnected from the call of duty servers.\u2019 Call of Duty dev error 6034 in Warzone can occur due to many reasons. Most probably, you will face this error due to a poor network connection. Moreover, some users face dev error 6034 eng_code_post_gfx.ff or dev error 6034 ww_code_pre_gfx.ff on their personal computers. In addition, some users report that they face the following errors on their personal computers: \tww_mp_hideout ff \tww_ui_boot.ff \tww_mp-emporium ff \tgoldflake error warzone \trembrandt error warzone \tdev error 6034 ww_mp_m_speed ff What Are The Solutions to Fix Dev Error 6034 in Warzone? The following techniques will solve the issue of dev error 6034 in Warzone: Changing Router DNS Settings Improper DNS settings of your console can be the reason for showing the fix dev error 6034. Therefore, changing the DNS to Google DNS or OpenDNS will fix the error. Follow these steps to change the DNS Settings: \tOn the controller, press the Xbox button. \tThen select Settings. \tOpen the Settings and then select Network. \tGo to the Advanced Settings tab. Then select DNS Settings. \tChoose Manual and enter primary and secondary DNS values. Try to change the router DNS like this: Google DNS \t \tPRIMARY 184.108.40.206 \tSECONDARY 220.127.116.11 OpenDNS \t \tPRIMARY 18.104.22.168 \tSECONDARY 22.214.171.124 \tSave all the changes. Click on Continue to see whether the DNS settings work correctly or not. \tFinally, launch the Modern Warfare and check if the error still exists or not. Installing Restoro Repair There can be some issues with your computer or laptop. So installing Restoro Repair will help you to scan the repositories. Moreover, it will replace the missing and corrupt files. Using this option is helpful in case when there is some problem with your system. Hence, install Restoro Repair to fix the issue of system corruption. Restoro Repair Restarting Your Console Try to turn off your console. After that, turn it on. Hence, it will fix the dev error 6034. Updating Your Software Your software should be updated. But if it is not updated, you will face an error. Further, there is a simple process to update your software: \tGo to the home screen of PlayStation \tThen highlight the game you play. Press the options button on the controller. \tChoose \u2018Check For Updates.\u2019 Install the available updates. Updating PlayStation 4 Removing PlayStation 4\u2019s Cache Over time, the cache is added to your PlayStation. So if you face the dev error 6034, try to remove the cache from your PlayStation. Follow these steps to do so: \tPress and hold the PlayStation button on the controller. \tSelect \u2018Turn Off PS4\u2019. \tMake sure that PlayStation 4 is completely powered down. Wait for 20-30 seconds. \tThen restart your PlayStation 4. Clear Cache of PlayStation Removing Xbox One\u2019s Cache When cache memory adds up in your Xbox One, you may face the dev error 6034. Therefore, remove the cache memory from your Xbox One. Follow these simple steps to do so: \tPress the Guide button on the controller. Go to the Settings. Select Restart console. After some time, select Restart. \tA future COD Modern Warfare update and Warzone will resolve the dev error 6034 on Xbox Series X and Xbox One. Summary When some corrupted or conflicting data packs or add-ons are installed on the Modern Warfare game, you may face the dev error 6034. Therefore, we have given you some techniques and solutions to fix this error. Follow all the steps carefully. Henceforth, you can clear the cache memory, change the DNS settings of the console, install the Restoro Repair tool, uninstall add-ons and data packs of the game, and reinstall the game completely to resolve the issue. We hope that you will find these solutions effective.