Hi, I also have the same problem on Ubuntu 24.04.1. A solution was to remove the "apt-cacher-ng" cache for Ubuntu noble :
sudo rm -rf /var/cache/apt-cacher-ng/uburep/dists/noble-*/ ** Package changed: apt (Ubuntu) => apt-cacher-ng (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1956039 Title: BADSIG 871920D1991BC93C Ubuntu Archive Automatic Signing Key (2018) <ftpmas...@ubuntu.com> Status in apt-cacher-ng package in Ubuntu: Confirmed Bug description: Updating Jammy fails with: Get:2 http://archive.ubuntu.com/ubuntu jammy InRelease [270 kB] Err:2 http://archive.ubuntu.com/ubuntu jammy InRelease The following signatures were invalid: BADSIG 871920D1991BC93C Ubuntu Archive Automatic Signing Key (2018) <ftpmas...@ubuntu.com> To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt-cacher-ng/+bug/1956039/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
