Pierre Frenkiel wrote: > I have still the same problem with "Hash Sum mismatch" > Do you have any idea on how to fix it?
Is your system behind a proxy cache of some sort? This problem is one sometimes seen when files of different ages are cached and served causing the entire set of files to be out of sync with each other. This is sometimes seen when behind a caching proxy server such as those on a large company network. There are various solutions. I think the simplest is to change the sources.list file to a different mirror. That will have the effect of asking for different URLs and will avoid the previously cached files and will cause the local copies of the old files to be expired. You are currently using: deb http://ftp.fr.debian.org/debian jessie main That is okay. Good! But for the purpose of this task change that to a different but still valid mirror. This would be a good time to try out the new http redirector which has just recently become an official Debian resource.[1] deb http://httpredir.debian.org/debian jessie main That httpredir.debian.org was previously known as http.debian.net for those on the list that are familiar with it. This is a good configuration for anyone geographically anywhere as it will redirect to the best known nearby mirror. The effect for you with this problem is that it will be a different appearing URL than the previously used ftp.fr.debian.org and will therefore ask for different files. The previously locally cached files on your disk in /var/lib/apt will be expired as no longer being in your sources.list file. If mismatched cached proxy files are your only remaining problem then this should fix it. Make sure to 'apt-get update' after changing the sources.list file. Bob Useful Resources: [1] https://lists.debian.org/debian-devel-announce/2015/05/msg00003.html http://httpredir.debian.org/
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