Results 1 to 4 of 4

Thread: Several unverified repository signatures today. Why and how to fix?

  1. #1
    Join Date
    May 2008
    Location
    United Kingdom
    Beans
    4,783
    Distro
    Lubuntu 18.04 Bionic Beaver

    Question Several unverified repository signatures today. Why and how to fix?

    Yesterday, my normal updates worked correctly.

    Today, I'm getting the following message, "The following signatures couldn't be verified because the public key is not available." It is happening for the following repositories:

    The errors from sudo apt update are as follows.
    Code:
    W: GPG error: http://download.virtualbox.org trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 54422A4B98AB5139
    W: GPG error: http://deb.playonlinux.com trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E0F72778C4676186
    W: GPG error: http://archive.canonical.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
    W: GPG error: http://extras.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192
    W: GPG error: http://archive.ubuntu.com trusty-updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
    W: GPG error: http://archive.ubuntu.com trusty-backports InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
    W: GPG error: http://archive.ubuntu.com trusty-security InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
    W: GPG error: http://dl.google.com stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A040830F7FAC5991 NO_PUBKEY 1397BC53640DB551
    W: GPG error: http://archive.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
    W: GPG error: http://ppa.launchpad.net trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 52A794126E3AB2D3
    W: GPG error: http://linux.dropbox.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY FC918B335044912E
    W: GPG error: https://download.01.org trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A902DDA375E52366
    What's going on? I know that I can manually add the public keys with sudo apt-key, but is that safe to do?
    Always make regular backups of your data (and test them).
    Visit Full Circle Magazine for beginners and seasoned Linux enthusiasts.

  2. #2
    Join Date
    Feb 2010
    Location
    Obscurial Springs
    Beans
    14,797
    Distro
    Ubuntu Budgie Development Release

    Re: Several unverified repository signatures today. Why and how to fix?

    I have some of the same sources with no errors. It may be a temporary glitch on the download server in use.
    "Our intention creates our reality. "

    Ubuntu Documentation Search: Popular Pages
    Ubuntu: Security Basics
    Ubuntu: Flavors

  3. #3
    Join Date
    May 2008
    Location
    United Kingdom
    Beans
    4,783
    Distro
    Lubuntu 18.04 Bionic Beaver

    Re: Several unverified repository signatures today. Why and how to fix?

    I have discovered the source of this problem, quite by accident.

    It is a bug relating to GPG. I have used the workaround, which fortunately worked, although it was rather repetitive entering a couple of dozen keys!
    Always make regular backups of your data (and test them).
    Visit Full Circle Magazine for beginners and seasoned Linux enthusiasts.

  4. #4
    Join Date
    Jul 2010
    Location
    ozarks, Arkansas, USA
    Beans
    13,888
    Distro
    Xubuntu 20.04 Focal Fossa

    Re: Several unverified repository signatures today. Why and how to fix?

    @Paddy Landau; Hey, hey ...

    Thanks for the heads up and solution.
    Noted.

    'buntu
    we are all on this together
    THE current(cy) in Documentation:
    https://help.ubuntu.com/community/PopularPages

    Happy ubuntu'n !

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •