"Repository does not have a release file" error
UbuntuRosUbuntu Problem Overview
I'm trying to install ROS on Ubuntu. I'm getting this error:
sudo apt-get update
Hit:1 http://pk.archive.ubuntu.com/ubuntu cosmic InRelease
Hit:2 http://pk.archive.ubuntu.com/ubuntu cosmic-updates InRelease
Hit:3 http://pk.archive.ubuntu.com/ubuntu cosmic-backports InRelease
Get:4 http://security.ubuntu.com/ubuntu cosmic-security InRelease [83.2 kB]
Ign:5 http://packages.ros.org/ros/ubuntu cosmic InRelease Err:6 http://packages.ros.org/ros/ubuntu cosmic Release 404 Not Found [IP: 64.50.236.52 80] Reading package lists... Done
E: The repository 'http://packages.ros.org/ros/ubuntu cosmic Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.
Ubuntu Solutions
Solution 1 - Ubuntu
You need to update your repository targets to the Focal Fossa (20.04) release of Ubuntu. This can be done like so:
sudo sed -i -e 's|disco|focal|g' /etc/apt/sources.list
sudo apt update
Solution 2 - Ubuntu
As described here, you need to edit (as root) the file /etc/apt/sources.list
(the easiest way to do this is to type sudo gedit /etc/apt/sources.list
). On the line that mentions http://packages.ros.org/ros/ubuntu you need to add [trusted=yes]
after the word deb
(you might need to add it as a separate word). Then save the file and try again.
Solution 3 - Ubuntu
#For Unable to 'apt update' my Ubuntu 19.04
The repositories for older releases that are not supported (like 11.04, 11.10 and 13.04) get moved to an archive server. There are repositories available at http://old-releases.ubuntu.com.
first break up this file
cp /etc/apt/sources.list /etc/apt/sources.list.bak
sudo sed -i -re 's/([a-z]{2}\.)?archive.ubuntu.com|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list
then
sudo apt-get update && sudo apt-get dist-upgrade
Solution 4 - Ubuntu
Make sure your /etc/apt/sources.list has http://old-releases.ubuntu.com instead of in.archive
Solution 5 - Ubuntu
I opened up my Software & Updates program
and switched from my country to the main servers like so:
After I done this and run the sudo apt update
commando again, my problems where gone.
Solution 6 - Ubuntu
In my case the cause was Ubuntu version no longer supported by Canonical. I was able to upgrade to still supported LTS with 2 steps:
- Manually update repo links from "in.ubuntu" to "old-releases.ubuntu". 1.1) Installed all outstanding updates
do-release-upgrade
was able to take from this point and do actual upgrade
IMHO, this is safer method then just updating repositories to next supported ubuntu, since do-release-upgrade
have chance to prevent upgrade that could fail, and may be able to diagnose a problem for you.
Solution 7 - Ubuntu
im use this code to and suggest you:
1) sudo sed -i -e 's|disco|eoan|g' /etc/apt/sources.list
2) sudo apt update
Solution 8 - Ubuntu
If a sudo apt-get update
did not do it for you, it might be that some packages have failed to updated to repository-related errors.
For me all of those happened to reside in (Software Updates --> Other Software). You could remove them with "Remove", the cache will be refreshed successfully. Otherwise
sudo apt-get clean
apt-get autoremove
is something to try.
Solution 9 - Ubuntu
I have been having this issue for a couple of weeks and finally decided to sit down and try and fix it. I have no interest in config file editing as I'm primarily a Windows user.
In a fit of "clickyness" I noticed that the ubuntu server location was set "for United kingdom". I switched this over to "Main Server" and hey presto... it all stared updating.
So, it seems like the regionalised server (for the UK at least) has a very limited support window so if you are an infrequent user it is likely it will not have a valid upgrade path from your current version to the latest.
Edit: I only just noticted the previous reply, after posting. 100% agree.
Solution 10 - Ubuntu
If You are facing an issue with a new "EC2 Instance" or "Ubuntu instance"
Then first do this
sudo apt-get upgrade
and then try again to install any thing in same way as mentioned in documentation.
Solution 11 - Ubuntu
This problem is probably from your /etc/apt/sources.list as others mentioned but there is chance that the problem is with your hard disk. I solved the same issue by cleaning up some space.
When you don't have enough space on your hard disk, updating your machine won't occur until you delete some files.