Authenticating 'focal.tar.gz' against 'focal.tar.gz.gpg' fails

Question

When trying to perform a do-release-upgrade to upgrade from Ubuntu 18.04 to 20.04 I am getting the below error

Checking for a new Ubuntu release
Get:1 Upgrade tool signature [1,554 B]                                                                                                 
Get:2 Upgrade tool [1,342 kB]                                                                                                          
Fetched 1,343 kB in 0s (0 B/s)                                                                                                         
authenticate 'focal.tar.gz' against 'focal.tar.gz.gpg' 
Authentication failed
Authenticating the upgrade failed. 
There may be a problem with the network or with the server.

FYI: I already tried sudo apt-get install --reinstall ubuntu-keyring.

Had the same problem and this answer could help: https://askubuntu.com/a/1281412/600344 — tobika, Oct 09 '20 at 14:00

score 18 · Accepted Answer · answered Jun 19 '20 at 04:17

18

Now I'm able to upgrade to ubuntu 20 after replacing below contents in /etc/apt/sources.list

deb http://in.archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse

deb http://in.archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse

deb http://in.archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse

deb http://in.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse

deb http://archive.canonical.com/ubuntu focal partner
deb-src http://archive.canonical.com/ubuntu focal partner

answered Jun 19 '20 at 04:17

Hiren

561
1
6
12

18

I had to do this, then `sudo apt-get install --reinstall ubuntu-keyring` to get it to work. – drice304 Jul 19 '20 at 02:14
What with what did you actually replace? – y.selivonchyk Oct 16 '20 at 15:55
1

Replace existing content of /etc/apt/sources.list with this – Hiren Nov 02 '20 at 11:44
1

This did not work at all for me but the sudo apt-get install --reinstall ubuntu-keyring made it work thanks #drice304 – Mickael Dubois Jan 30 '22 at 15:30
Had same issue with upgrade from 20.4 to 22.4 and to replace my sources with this content helped me. Thanks! – San Droid Aug 09 '22 at 08:11

Authenticating 'focal.tar.gz' against 'focal.tar.gz.gpg' fails

1 Answers1