How to fix Ubuntu/Debian apt-get 404 Not Found Package Repository Errors (Saucy, Raring, Quantal, Oneiric, Natty…)

fix_ubuntu_old.dev.txt

Run this command below on your server and it will replace all of the  archive.ubuntu.com  and  security.ubuntu.com package repository URLs with  old-releases.ubuntu.com

sudo sed -i -e 's/archive.ubuntu.com\|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list

You may also want to see if there are other files in  /etc/apt/sources.list.d/  that need to be updated, which can be done with a simple grep command:


grep -E 'archive.ubuntu.com|security.ubuntu.com' /etc/apt/sources.list.d/*



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Error

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Err http://archive.ubuntu.com quantal/main amd64 Packages
  404  Not Found [IP: 91.189.91.15 80]
Err http://archive.ubuntu.com quantal/restricted amd64 Packages
  404  Not Found [IP: 91.189.91.15 80]
 
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/quantal-security/main/binary-amd64/Packages  404  Not Found [IP: 91.189.91.15 80]
 
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/quantal-security/restricted/binary-amd64/Packages  404  Not Found [IP: 91.189.91.15 80]
 
 
Err http://security.ubuntu.com raring-security/main amd64 Packages         
  404  Not Found [IP: 91.189.91.15 80]
Err http://security.ubuntu.com raring-security/restricted amd64 Packages   
  404  Not Found [IP: 91.189.91.15 80]
Err http://security.ubuntu.com raring-security/universe amd64 Packages     
  404  Not Found [IP: 91.189.91.15 80]
Err http://security.ubuntu.com raring-security/multiverse amd64 Packages   
  404  Not Found [IP: 91.189.91.15 80]