Oct 272015

So you ran do-release-upgrade but it didn’t work?


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

Some useful logs are located under /var/log/dist-upgrade/ and I bet you are going to find there something along these lines:

Error authenticating some packages

It was not possible to authenticate some packages. This may be a transient network problem. You may want to try again later. See below for a list of unauthenticated packages


Temporary workaround, create file


filled with the following


Now your sudo do-release-upgrade should run OK

Make sure to remove this file once upgrade process is completed.

And if this helped don’t forget to leave a comment 😉