Cfrgtkky

(This question was not resolved. Due to time constraints Computer was restored to factory settings.)

I was attempting to upgrade from 14.04 to 16.04, but apt threw this error:

The required dependency 'apt (>= 1.0.1ubuntu2.13)' is not installed.

What does this mean, and how can I fix it?

When I type in the command apt-cache policy apt

Shageenth@shageenth-Inspiron-3451:~$ apt-cache policy apt apt:

Installed: 1.0.1ubuntu2.11

Candidate: 1.0.1ubuntu2.11

Version table:

*** 1.0.1ubuntu2.11 0

100 /var/lib/dpkg/status

1.0.1ubuntu2 0

500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 

Packages

The error happens when I run the command:

sudo do-release-upgrade -d

and it produces the following:

Checking for a new Ubuntu release

Get:1 Upgrade tool signature [198 B]

Get:2 Upgrade tool [1,265 kB]

Fetched 1,265 kB in 0s (0 B/s)

authenticate 'xenial.tar.gz' against 'xenial.tar.gz.gpg'

extracting 'xenial.tar.gz'



Reading cache



Checking package manager

Reading package lists... Done

Building dependency tree

Reading state information... Done

Building data structures... Done



Required depends is not installed



The required dependency 'apt (>= 1.0.1ubuntu2.13)' is not installed.

I've had the exact same problem today.
Make sure your version is the latest Ubuntu 14.04 version before the upgrade. (Ubuntu 14.04.4 at this time)

Mine was stuck to Ubuntu 14.04.3 due to a bad mirror.

So first run:

sudo apt update

sudo apt dist-upgrade

Make sure the version is now Ubuntu 14.04.4 (update September 2016 : Ubuntu 14.04.5).

cat /etc/lsb-release

And start Ubuntu 16.04 installation with

sudo do-release-upgrade -d

Best to always update through the normal procedures of:

sudo apt update

sudo apt dist-upgrade

If the above fails, then you can step manually through the following. This question is outdated, but you can just change the version numbers as the links should still be the same.

To upgrade your version of apt from a terminal window, type in the following:

sudo apt-get download apt

if the above doesn't work, you can also download it with wget by running the following line:

wget http://security.ubuntu.com/ubuntu/pool/main/a/apt/apt_1.0.1ubuntu2.17_amd64.deb

then type in

sudo dpkg -i apt*.deb

Just tried this on my system here. Here is the output:

terrance@terrance-VirtualBox:~$ sudo apt-get download apt

[sudo] password for terrance: 

Get:1 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main apt amd64 1.0.1ubuntu2.17 [954 kB]

Fetched 954 kB in 0s (1,127 kB/s)

terrance@terrance-VirtualBox:~$ ls

apt_1.0.1ubuntu2.17_amd64.deb  Documents  examples.desktop  Pictures  Templates

Desktop                        Downloads  Music             Public    Videos

terrance@terrance-VirtualBox:~$ sudo dpkg -i apt*.deb

(Reading database ... 168376 files and directories currently installed.)

Preparing to unpack apt_1.0.1ubuntu2.17_amd64.deb ...

Unpacking apt (1.0.1ubuntu2.17) over (1.0.1ubuntu2.11) ...

Setting up apt (1.0.1ubuntu2.17) ...

Processing triggers for man-db (2.6.7.1-1ubuntu1) ...

Processing triggers for libc-bin (2.19-0ubuntu6.7) ...

If After the steps described you see a fail due to a missing dpkg dependency you can just finish by repeating the steps with dpkg and ..

wget http://security.ubuntu.com/ubuntu/pool/main/d/dpkg/dpkg_1.18.24ubuntu1_amd64.deb

sudo dpkg -i dpkg_1.18.24ubuntu1_amd64.deb

All of the packages that are available to Ubuntu can be found here:

http://security.ubuntu.com/ubuntu/pool/main/

Simple fix...Which has worked for me...

Open your Synaptic Package manager type "apt" in search box that will show you the current installed version of apt lets assume "1.0.1ubuntu1.13" just right click on it and click mark for upgrade then click apply button at the top.

after upgrade..

Make sure to close the synaptic package manager before going to run your

final command

sudo do-release-upgrade  

and it should work..

I got this error message and a very simple

apt-get update
apt-get upgrade

solved it. The other answers are wildly innacurate -- for example the one talking about moving Ubuntu 14.04.3 to 14.04.4 via dist-upgrade -- but dist-upgrade moves to the next Ubuntu version, not minors. Minors are just a released collection of specific package versions anyways, simply by keeping your packages up to date you get at least those versions or newer. Do not run dist-upgrade unless you know what you are doing.