I am quite new to Linux. After I did fresh install from iso and update system components from AppCenter() I wanted to install net-tools using apt-get.

firstly I did sudo apt-get update but got error. Screen from my vm (sorry cant install vmware tools because of apt-get problem).

enter image description here

Now I have searched quite a lot and found lot of tips leading to editing /etc/apt/sources.list but since its fresh install I think it should work OOB.


lsb_release -a 


Distributor id: elementary
Description: elementary OS 5.0 Juno
Release: 5.0
Codename: Juno

lsb_release -a -u


Distributor id: Ubuntu
Description: Ubuntu 18.04 LTS
Release: 18.04
Codename: bionic

Please help.

edit 1: It appears that AppCenter also fails fetching updates now. Message is the same.

2 Answers 2


try removing the ppa

sudo add-apt-repository --remove ppa:elementary-os/stable

and then add it again, that way you'll get the key again

sudo add-apt-repository ppa:elementary-os/stable


this is the repo's url



if the command add-apt-repository is missing, you need to install software-properties-common

sudo apt install software-properties-common

Its still broken over on my system and yes I tried removing and re-adding the repository it didn't seem to do much to fix the problem.

My best guess after digging around the elementary OS Beta StackExchange is to replace the sources with bionic instead of juno to fix the issue through some sort of way I can't find yet.

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