Why hash sum mismatch

Yes, apt command provides a high-level commandline interface for the package management system. How to fix it? How do I fix hash sum mismatch? Done Building dependency tree Reading state information Done Calculating upgrade Done The following NEW packages will be installed: linux-image Need to get After this operation, MB of additional disk space will be used.

Do you want to continue? Done Preconfiguring packages Reading database Once I got rid of the proxy in apt. Add a comment. Active Oldest Votes. There's two work arounds for this: Tell your apt client not to use XZ compressed metadata Upgrade apt on your system to a version newer than 1. There's two work arounds for this: Upgrade to a newer version of APT and ensure that the repository you create or want to use supports the Acquire-by-hash feature.

This fixes the issue at its core, but not be possible in some cases if you don't control the repository. You can delete the cached metadata on your system and try again. Next, run apt-get update. This will re-download all the metadata. If the repository you are trying to connect to doesn't update itself while you are running apt-get update , you will be fine. Otherwise, you'll have to do this again. Improve this answer.

Joe Damato Joe Damato 7 7 silver badges 8 8 bronze badges. This is the only solution that worked for me! Thanks for the blog post — Amir Uval. You commented that apt better be the latest version. Could you please tell me how to update it?

How exactly do you use the Acquire-by-hash feature? I've seen blogs about it but they don't say which file exactly to put it in and they don't show an example. Figured it out. The k9 internet filter installed a kernel extension that apparently messes with the traffic. As soon as I uninstalled the filter, the problem went away.

This actually makes a lot of sense, because I recently started having this issue after installing k9; but I didn't make the connection at the time. A workaround would be nice, because I'd obviously prefer not to disable the filter after all, it's there for a reason. Yeah but how could i do that remove the filter , because i have same problem of you, but anyhow im still stucked in — user Learn more.

Hash sum mismatch error while upgrading Ask Question. Asked 1 year, 5 months ago. Active 1 year, 3 months ago. Viewed 4k times. Improve this question. Add a comment. Active Oldest Votes. Improve this answer. MichaIng MichaIng 1 1 gold badge 1 1 silver badge 12 12 bronze badges. I guess the issue was with the mirror.

I already tried the above solutions but it didn't work. Indeed not an uncommon issue.