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I am getting the message Internet Not working when I try to update Ubuntu.

Failed to fetch 404  Not Found [IP: 80]

Failed to fetch 404  Not Found [IP: 80]

But my internet is working fine, since i am able to download all files via internet.

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possible duplicate of Update Manager Error: Failed to fetch – Anwar Shah Jul 31 '12 at 7:50

This is not a error with your computer. Because there is no such a file(linux-headers-3.0.0-19_3.0.0-19.32_all.deb) in the "" server.

Try to run apt-get update && apt-get upgrade

If this not works change the repository mirror. [/etc/apt/sources.list]

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