I am trying to update a virtualized Ubuntu server 14.04 LTS to 16.04 LTS by ssh (Putty).

I have tried multiple methods and they all indicate "No new release found"

Ubuntio information is No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.6 LTS Release: 14.04 Codename: trusty

method 1

# sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade
# sudo apt-get install -y update-manager screen
# sudo screen
# sudo do-release-upgrade -d

Ubuntu is not updated - No new release found

method 2

# sudo apt-get install update-manager-core
# do-release-upgrade -d
# sudo apt-get update

Ubuntu is not updated - No new release found

Is there any other method to update or it is no longer possible to update Ubuntu 14.04.6 LTS to 16.04

  • 1
    Officially it is not possible. There is a hacky way to replace repos in sources.list, but that may work, or not. Why not do a new install?
    – Pilot6
    Feb 4, 2020 at 16:41
  • 2
    Both those methods have mistakes in them, so it's not surprising that neither work. Please don't copy-and-paste magic shell incantations into your system; those usually just break your system. Backup your data and clean-install a newer (supported) release of Ubuntu. It takes approximately the same amount of time as an upgrade, and much less can go wrong. Be sure to mark your calendar so you remember to upgrade on time.
    – user535733
    Feb 4, 2020 at 16:47
  • Luigi, upgrades from 14.04 to 16.04 are supported here, and are possible. 1) Are you in a situation where you have to do this by ssh because you don't have immediate access to the machine you are upgrading? 2) Is it practical to do a complete reinstall and then restore your configuration and data from backup? If not, why must you do an upgrade from 14.04 to 16.04 without a reinstall? This helps us understand your situation.
    – K7AAY
    Feb 4, 2020 at 17:47
  • 1
    Why do-release-upgrade -d?; the -d means go to development release (ie. 20.04) which is not possible from 14.04. The fact that you didn't get the development release error message implies to me you system is fully upgraded (14.04 has been EOL for awhile, mirrors can drop archives post-EOL so you should read your apt-get update output for any issues due to this far past EOL date).
    – guiverc
    Feb 4, 2020 at 21:51
  • 1
    '-d' forces a latest release (19.10) to the development release (20.04) and will do nothing with prior releases (other than messages saying you'll need to move to latest/19.10 first). '-p' is proposed; refer man do-release-upgrade to see the reference manual page for your actual release.14.04 can go to 16.04, then you'll need to reboot to fully be in 16.04. A 16.04 can then bump to 18.04
    – guiverc
    Feb 11, 2020 at 21:19

1 Answer 1


If you present this failure when updating, the correct way to update the Ubuntu 14.04 LTS to the server console 16.04 LTS.

sudo apt update && sudo apt upgrade && sudo apt dist-upgrade && sudo apt autoremove
sudo apt-get install update-manager-core
sudo cat /etc/update-manager/release-upgrades

we edit the line Prompt = and replace Prompt = lts

sudo do-release-upgrade -p

We validate the version and specified the repositories

sudo apt-get upgrade
sudo apt-get install

if you present this error

apt-get: relocation error: /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0: symbol _ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareERKS4_, version GLIBCXX_3.4.21 not defined in file libstdc++.so.6 with link time reference

We download and install the packages (libstdc ++ 6 and gcc-5-base) corresponding to our system https://packages.ubuntu.com/xenial/i386/libstdc++6/download




we copy to the server using the WinSCP program, install the packages

sudo dpkg -i *.deb

finished the installation we execute the commands

sudo apt-add-repository ppa:ubuntu-toolchain-r/test
sudo apt-get upgrade -f

Update Ubuntu server 16.04.6 LTS to 18.04 LTS (console)

sudo apt update && sudo apt dist-upgrade && sudo apt autoremove
sudo apt-get install update-manager-core
sudo do-release-upgrade -p
sudo apt-get update

Ready OS updated

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