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W:Failed to fetch  404  Not Found [IP: 80]
, W:Failed to fetch  404  Not Found [IP: 80]
, E:Some index files failed to download. They have been ignored, or old ones used instead.

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I am running 12.04 x86, but when I check the sources.list file, there is nothing in there that seems to reference anything i386 (but the error spits out 'i386' as part of the repo url). I think it has to do with my above setup, because I am choosing to run the latest software? I'm just not sure where to look to resolve this. sources.list isn't helping :(

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These sources might be bad. Just remove these lines from your sources.list and it should be fine. – Mitch Aug 30 '12 at 18:16
@Mitch I don't see anything referencing 'i386' in my sources.list, that's the problem (as I already mentioned above). What should I remove? – MALON Aug 30 '12 at 19:13

The error you are getting is 404 HTML not Found. In order to solve this.

Try using a different Mirror:

  • Click on Download From.
  • Click on Download From.
  • Then Choose Other Location
  • Then choose Choose Best Server
  • it will scan and find the best servers closest to you.

enter image description here

enter image description here

If you want to do this manually you will need to look in:


in sources.list.d there are individual files for each of the sets of external sources. Instead of everything in one sources.list file.

you could do a grep to find the offending line in /etc/apt:

grep -Hrin "" /etc/apt

grep -Hrin "" /etc/apt
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