Score:2

Invalid signatures and signed issue

tr flag
JrV

If I perform sudo apt-get update. I obtain:

GPG error: http://cdn-fastly.deb.debian.org/debian jessie Release: The following signatures were invalid: EXPKEYSIG 7638D0442B90D010 Debian Archive Automatic Signing Key (8/jessie) <ftpmaster@debian.org> EXPKEYSIG CBF8D6FD518E17E1 Jessie Stable Release Key <debian-release@lists.debian.org> 75DDC3C4A499F1A18CB5F3C8CBF8D6FD518E17E1
E: The repository 'http://http.debian.net/debian jessie Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.

How can I fix this?

Thanks for the feedback.

My installed Ubuntu: Distributor ID: Ubuntu Description: Ubuntu 20.04.5 LTS Release: 20.04 Codename: focal

guiverc avatar
cn flag
I'd remove that source from your system, as you won't get anything useful from it. Debian Jessie is EOL & has been for some time! - refer https://www.debian.org/News/2020/20200709
JrV avatar
tr flag
JrV
What is the best approach to perform this safely?
guiverc avatar
cn flag
I'd suggest reversing how you added it... ie. if you used a text editor to add it to `/etc/apt/sources.list` then re-edit that file & remove it. If you added it as a source in `/etc/apt/sources.list.d/` then remove that added file. Given Debian *jessie* has been EOL since 30-June-2020 - you've likely only added it recently (~2.5 years living with that message makes me think it was recent).
Score:1
tr flag
JrV

Solved. Removed the source from /etc/apt/sources.list

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