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How to fix Xbox 360 MTU Test Failure?

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Ok so i stopped playing xbox in June (vacation, then house was reconstructed, took a while lol.) But now I want to start playing again. However, every time i test my connection i pass everything except the stupid mtu test. It says I need at least 1342 of MTU and I am POSITIVE i have that. I tried everything from restarting my modem/router/xbox to trying new ethernet cables etc. Is there another possible way to fix this problem? Please HELP ME!

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1 COMMENT

  1. Are you on a schools network? It is possible you have to manually set your ip address and dns server.

    edit: i still suggest trying to manually setting your ip address and dns server. Just use the same numbers your computer has and it will work.

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