I installed elementary Os again a fresh install but after installation when i headed to app centre for updates it says failed to fetch updates. This happens to me everytime when i install elementary but everytime the cause is different now its an icon is not yet available. Also this is my second fresh install of the day the 1st time i did i updates using terminal but this same error popped up so i started started again and so hear i am. This is the 13th time thsi has happened to me this year.Is is something to do with me ,is it my fault for not doing something right?enter image description here

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  • Updates come from repositories hosted on servers. Those servers might be unavailable at times, or might contain invalid information. Try the approved solution here: stackoverflow.com/questions/15505775/… and let us know if it fixed your issue.
    – Vlad
    Commented Jul 7, 2020 at 10:31
  • no i have tried it it didn't work that was the whole reason why i posted this question Commented Jul 7, 2020 at 14:55

1 Answer 1


As explained here, hash sum mismatch errors are usually more typical for clients behind proxy caches. To solve the issue, remove all the content of /var/lib/apt/lists directory:

Type in the terminal:

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

then type:

sudo apt update && sudo apt upgrade

It should solve the issue. Ask your Internet Service Provider do they use some proxy. If yes. Then ask can they disable proxy for you.


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