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Every time I check for updates, I get:

W:Failed to fetch http://cz.archive.ubuntu.com/ubuntu/dists/saucy/main/binary-amd64/Packages  404  Not Found [IP: 217.31.202.63 80]
, W:Failed to fetch http://cz.archive.ubuntu.com/ubuntu/dists/saucy/universe/binary-amd64/Packages  404  Not Found [IP: 217.31.202.63 80]
, W:Failed to fetch http ://cz.archive.ubuntu.com/ubuntu/dists/saucy/main/binary-i386/Packages  404  Not Found [IP: 217.31.202.63 80]
, W:Failed to fetch http ://cz.archive.ubuntu.com/ubuntu/dists/saucy/universe/binary-i386/Packages  404  Not Found [IP: 217.31.202.63 80]
, E:Some index files failed to download. They have been ignored, or old ones used instead.

Some other suggestions are to look in /etc/apt/sources.list, but there is nothing about cz in that file, nor does it contain "ca.archive.ubuntu.com/ubuntu/..." mentioned is another answer on this forum. This has been going on for a while and I hoped that some mirror list might be fixed and the problem might go away, but I finally feel it's worth mentioning. Usually, I just get a warning, and updates still happen, but I had an issue trying to load a package today and I'm wondering if they may be connected.

I've been using ubuntu for several years, so I'm not a complete noob, but this is outside my knowledge area, and I haven't been able to google an answer.

Note: I added a space after two of the link : because my reputation is too low to post more that two links.

uname -a

Linux transition 3.13.0-65-generic #105-Ubuntu SMP Mon Sep 21 18:50:58 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

This problem is not a duplicate of How can I fix a 404 Error when using a PPA or updating my package lists? because my problem is not with ppa, and none of the solutions there fixed my problem.

Community
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normcf
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2 Answers2

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You have some lines in /etc/apt/sources.list that refer to saucy release that is not supported any more.

Just remove them. If you have Ubuntu 14.04, you need only trusty repositories.

Pilot6
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  • There is no "saucy" in my /etc/apt/sources.list. I see another answer mentioning /var/lib/apt/lists/ and, indeed, there are some files beginning with cz. – normcf Oct 06 '15 at 17:06
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if your/etc/apt/sources.list does not contain this server (or lines that refer to saucy) you may have to remove /var/lib/apt/lists/* - it is possible that there are remains of an older version. try this:

$ sudo rm -i /var/lib/apt/lists/cz.*
$ sudo apt-get update

it is also possible that there is something referring to this server in /etc/apt/sources.list.d/. if so: delete the file and $ sudo apt-get update.

make sure your /etc/apt/sources.list refers to the correct ubuntu version. you can find out what release you are running with

$ lsb_release -av

your sources.list file should only contain entries that have the Codename that is listed in the command above.

but if you still run saucy: it has reached it's end-of-life. you will still find it in the old-releases.

you need to change your /etc/apt/sources.list to contain:

deb http://old-releases.ubuntu.com/ubuntu/ saucy main restricted universe multiverse

and so on.

you may consider upgrading to a newer - still supported - version of ubuntu.

hiro protagonist
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  • Indeed, /var/lib/apt/lists/ did have several files prefixed cz.archive.ubuntu.com_ubuntu_dists_saucy_ and I removed them. I just checked for updates, and no warnings or errors so far. I'll do a little more testing, after at least one reboot, before declaring success. – normcf Oct 06 '15 at 17:11
  • I have also confirmed that my /etc/apt/sources.list only contains references to trusty. – normcf Oct 06 '15 at 17:21
  • This was the correct solution for me. Thanks. – normcf Oct 10 '15 at 12:34
  • also in my case in "software & updates" under "Other software" there was a checked line for "Ubuntu 13.10 'Saucy Salamander'. Removing that resolved the issue – maximus Feb 25 '19 at 08:20