This question already has an answer here:

Now that the mirrors are not offering the uncompressed version of "Packages", what is the official way to update the system to take into account the compressed version like "Packages.gz"?

W: Failed to fetch http://ca.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/binary-amd64/Packages  403  Forbidden [IP: 80]

NB: Ubuntu server so no GUI so it's not a duplicate.

Summary: how to make apt-get look for "Packages.gz" instead of "Packages" (note the ".gz")

marked as duplicate by Radu Rădeanu, gertvdijk, Mitch, Basharat Sialvi, psusi Jul 1 '13 at 0:09

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  • You seem to have a problem with your firewall. – psusi Jul 1 '13 at 0:08
  • I have no issue with the firewall. My issue is that apt-get update is looking for file "Packages" but is unable to find it since the official repo and my country repo (ca.archive.ubuntu.com) are offering only "Packages.gz" and "Packages.bz2" – Fafali Jul 2 '13 at 0:57
  • @Fafali Ordinarily that would produce a 404 error. A 403 error in this context suggests a server misconfiguration (which is not related to client-side firewall problems, though potentially that could also explain this). Please note that the answers here may help you; they do not assume a client-side firewall problem. If they don't help you, I recommend editing your question to provide more information, including exactly what happened when you tried following the advice there. Also please let us know if you use a web proxy. – Eliah Kagan Jul 2 '13 at 14:22
  • The error says access denied, not file not found. I checked and the server is not giving this error, so you must have a firewall/proxy server you are going through on your network that is returning the error. – psusi Jul 5 '13 at 0:50