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I have recently shifted from Ubuntu to Lubuntu 19.10, and I was deleting the packages which were usually using GNOME. I unfortunately happened to delete my Software Center and update center. I cannot update my system right now and it's really a mess. I receive this error message when I try to run sudo apt update 

Hit:1 http://deb.playonlinux.com trusty InRelease 
Ign:2 http://old-releases.ubuntu.com/ubuntu bionic-security InRelease
Ign:3 http://ppa.launchpad.net/lubuntu-desktop/ppa/ubuntu eoan InRelease
Err:4 http://old-releases.ubuntu.com/ubuntu bionic-security Release  404  Not Found [IP: 91.189.88.153 80] 
Hit:5 http://archive.canonical.com/ubuntu bionic InRelease                   
Err:6 http://in.old-releases.ubuntu.com/ubuntu bionic InRelease        
Could not resolve 'in.old-releases.ubuntu.com' 
Err:7 http://in.old-releases.ubuntu.com/ubuntu bionic-updates InRelease
Could not resolve 'in.old-releases.ubuntu.com' 
Err:8 http://in.old-releases.ubuntu.com/ubuntu bionic-backports InRelease
Could not resolve 'in.old-releases.ubuntu.com' 
Ign:9 http://ppa.launchpad.net/mc3man/xerus-media/ubuntu eoan InRelease
Ign:10 http://download.opensuse.org/repositories/home:/strycore/xUbuntu_19.10 InRelease
Ign:11 http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu eoan InRelease
Err:12 http://download.opensuse.org/repositories/home:/strycore/xUbuntu_19.10 Release 404  Not Found [IP: 195.135.221.134 80] 
Err:13 http://ppa.launchpad.net/lubuntu-desktop/ppa/ubuntu eoan Release   404 Not Found [IP: 91.189.95.83 80] 
Err:14 http://ppa.launchpad.net/mc3man/xerus-media/ubuntu eoan Release 404  Not Found [IP: 91.189.95.83 80] 
Err:15 http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu eoan Release 404  Not Found [IP: 91.189.95.83 80] 
Reading package lists... Done
E: The repository 'http://old-releases.ubuntu.com/ubuntu bionic-security 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. 
E: The repository 'http://download.opensuse.org/repositories/home:/strycore/xUbuntu_19.10 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. 
E: The repository 'http://ppa.launchpad.net/lubuntu-desktop/ppa/ubuntu eoan 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. 
E: The repository 'http://ppa.launchpad.net/mc3man/xerus-media/ubuntu eoan 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. 
E: The repository 'http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu eoan 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.

This is my sources.kist after sudo nano /etc/apt/sources.list 

# deb cdrom:[Ubuntu 18.04.1 LTS _Bionic Beaver_ - Release amd64 (20180725)]/ bionic main restricted

# newer versions of the distribution.
# deb http://old-releases.ubuntu.com/ubuntu eoan main restricted deb-src http://in.old-releases.ubuntu.com/ubuntu/ bionic main restricted

## Major bug fix updates produced after the final release of the
## distribution.
# deb http://old-releases.ubuntu.com/ubuntu eoan-updates main restricted deb-src http://in.old-releases.ubuntu.com/ubuntu/ bionic-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
# deb http://old-releases.ubuntu.com/ubuntu eoan universe deb-src http://in.old-releases.ubuntu.com/ubuntu/ bionic universe
# deb http://old-releases.ubuntu.com/ubuntu eoan-updates universe deb-src http://in.old-releases.ubuntu.com/ubuntu/ bionic-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
# deb http://old-releases.ubuntu.com/ubuntu eoan multiverse deb-src http://in.old-releases.ubuntu.com/ubuntu/ bionic multiverse
# deb http://old-releases.ubuntu.com/ubuntu eoan-updates multiverse deb-src http://in.old-releases.ubuntu.com/ubuntu/ bionic-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://old-releases.ubuntu.com/ubuntu eoan-backports main restricted universe multiverse deb-src http://in.old-releases.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu eoan partner deb-src http://archive.canonical.com/ubuntu bionic partner

# deb http://old-releases.ubuntu.com/ubuntu eoan-security main restricted deb-src http://old-releases.ubuntu.com/ubuntu bionic-security main restricted
# deb http://old-releases.ubuntu.com/ubuntu eoan-security universe deb-src http://old-releases.ubuntu.com/ubuntu bionic-security universe
# deb http://old-releases.ubuntu.com/ubuntu eoan-security multiverse deb-src http://old-releases.ubuntu.com/ubuntu bionic-security multiverse
# deb http://old-releases.ubuntu.com/ubuntu eoan-proposed main multiverse universe restricted
karel
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Sukhendu Reddy
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1 Answers1

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You clearly copied those sources from someplace else and much older, which wasn't wise.

This won't work, because Eoan (19.10) is not OLD (unsupported) yet:

deb http://old-releases.ubuntu.com/ubuntu eoan main restricted

Instead, try this:

deb http://releases.ubuntu.com/ubuntu eoan main restricted

As you go through and correct the mistake on all those lines, you might discover some duplicates. Exact duplicates will raise warnings - delete one of the duplicates...it doesn't matter which duplicate gets deleted.

user535733
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