sudo apt-get update gives me this:

E: Failed to fetch http://fi.archive.ubuntu.com/ubuntu/dists/xenial-updates/main/binary-i386/by-hash/SHA256/0f926d2c41be3de2b8a2089364d36615abebcd1dbb4a16d2711754a6dc450a21  Hash Sum mismatch
E: Failed to fetch http://fi.archive.ubuntu.com/ubuntu/dists/xenial-updates/universe/binary-amd64/by-hash/SHA256/9e349f9e513f531105f32ae2eb8c2b6d4c3d69f43789ab0750dbb8e12d86520b  
E: Failed to fetch http://ppa.launchpad.net/webupd8team/sublime-text-3/ubuntu/dists/xenial/main/i18n/Translation-en.xz  Hash Sum mismatch
E: Some index files failed to download. They have been ignored, or old ones used instead.

Operating system is: Ubuntu 16.04

closed as unclear what you're asking by countermode, Archemar, Eric Renouf, HalosGhost, sam Nov 10 '16 at 15:59

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • Any idea on how to resolve this problem? – J. Doe Nov 10 '16 at 9:31
  • How come it is unclear what I asked? I mentioned the exact action I performed on which Linux plateform. I shared the error message I got. Is there a more clear question? – J. Doe Nov 10 '16 at 16:17

Choose for your package-sources not a mirror Server.


and choose main server.

And sudo rm /var/lib/apt/lists/ppa.launchpad.net_webupd8team_sublime-text-3_ubuntu_dists_xenial_*

sudo apt update

  • You seem to know more than what your reputation reflects. It works. One last question though: why choosing a mirror server is a bad idea? – J. Doe Nov 10 '16 at 10:12
  • Mirror server often not synchronized. – user192526 Nov 10 '16 at 10:21

The usual fix is to remove the content of /var/lib/apt/lists

sudo rm -rf /var/lib/apt/lists/*

If you have limited internet trafic just remove the ones which fail.

Then run

sudo apt-get update
  • I did what you said but I got more errors of the type : E: Failed to fetch – J. Doe Nov 10 '16 at 10:05

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