i get dev error 6034 when playing xbox 1 call of duty modern warefare since the march 30 update

how do i fix dev derror 6034

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Hello @kerryrobinson1, I hope everything is going well!

Thank you for reaching Microsoft Xbox Forum support!

I would like you to go through the following steps to clear the Mac address and then perform a quick power cycle on your console:

Settings > Network Settings > Advanced Settings > Alternate Mac Address > Clear it and the console should restart. It would definitely help if you could restart the internet router while the console is restarting.


After going through the troubleshooting steps mentioned, I invite you to perform a quick power cycle by turning off the console and then unplugging all the cables. After 2 to 3 minutes, re-plug them back again, then restart your console.


In case the issue still persists, the next step would be to perform a reset on the console. To do so you will need to follow the steps below to perform a reset on the Xbox:


Settings > System > Console Info > Reset This Xbox > Reset and Keep my Games and Apps.


Note =>The "Reset and Keep my Games and Apps" option will not cause losing your games, but please be aware that you need to be completely aware of the email address as well as the password of your account before going for it because it will require you to sign in to the account.


I wish you a lovely day, and I hope this helps you out! All the best!


Kind Regards

Stay safe, and happy gaming!

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Question Info


Last updated July 12, 2021 Views 117 Applies to: