4

How do I fix this error?

st@ThinkPad-T450s:~/Downloads$ sudo do-release-upgrade -d
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [836 B]                                                     
Get:2 Upgrade tool [1.264 kB]                                                            
Fetched 1.264 kB in 0s (0 B/s)                                                           
authenticate 'zesty.tar.gz' against 'zesty.tar.gz.gpg' 
Authentication failed
Authenticating the upgrade failed. There may be a problem with the network or with the server.

I get the same error with update-manager -d.

I know I can turn off gpg authentication in apt-get but not in do-release-upgrade or update-manager

3
  • What is your current Ubuntu version? – Pilot6 Jan 27 '17 at 20:37
  • My currect Ubuntu version is: Release: 16.10, Codename: yakkety. – mrsteve Jan 28 '17 at 5:02
  • What are you trying to achieve? You have the latest version. Why are you trying to upgrade it? – Pilot6 Jan 28 '17 at 10:29
2

You can try to delete trusted keys from /etc/apt dir.

rm -rf /etc/apt/trusted*

After this, you must to update your packages list:

apt-get update

You will see some error with missing keys. Now, you can re-import keys:

apt-key adv --keyserver http://keyserver.ubuntu.com:80 --recv-keys KEY_ID

After this, do-release-upgrade will work correct.

1
  • 1
    Didn't help, still can't upgrade to focal. – Gringo Suave May 18 '20 at 19:19

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