I have been automatical messages to upgrade to the next ubuntu-version whenever I launched the internet during the last months.
I however cannot upgrade folllowing the offered path
this is what happends after typing in my sudo-password and fetching of some 100 files:
W:Failed to fetch http://archive.canonical.com/ubuntu/...source/Sources 404 Not Found [IP: 22.214.171.124 80]
, E:Some index files failed to download. They have been ignored, or old ones used instead.
Now as far as I know, I don't have a network problem since internt always works fine.
I have tried to upgrade via terminal using sudo apt-get upgrade and something was indeed upgraded and terminal tells me "done" now, but the next time on the internet I received an ubuntu end of life message indicating that I still am using the old outdatet version.
Thanks for helping.