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I am having a trouble whenever I want to install a new package or run sudo apt-get update with the following message:

W: The repository 'http://packages.elementary.io/appcenter xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://packages.elementary.io/appcenter/dists/xenial/main/binary-i386/Packages  403  Forbidden [IP: 104.28.5.44 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.

Here is a screenshot of my software packages

packages list So, how can I fix this problem and get the broken messages repaired?

marked as duplicate by Ravan, Axel Advento, lemonslice, SamMorrowDrums, bigbang Jan 29 '18 at 10:18

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  • I don't know. I think it was a server related problem "certificate, blocking, proxy ... " it was fixed itself :) thanks @Ravan – White159 Jan 13 '18 at 21:32
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I had a similar problem, I did a research and found 2 possible reasons - mis-configured proxy and certificates problem. In my case the reason was certificates mess, my resolution you can see here

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    Thanks a lot. It was fixed without doing anything. But yeah, it's a certificate problem. – White159 Jan 5 '18 at 23:36

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