Hi guys, I manually fixed this issue with bad GUI representation of process execution. You have to remove some old or not any more synchronized repositories. In terminal, execute command: sudo apt update
This will tell you witch repos are bad, examples: E: The repository 'http://ppa.launchpad.net/somerville-dla-team/ppa/ubuntu focal Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. --------------------------------------------------------------------------------------------------------- E: The repository 'http://oem.archive.canonical.com/updates bionic-oem Release' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: GPG error: http://dell.archive.canonical.com/updates bionic-dell-beaver-osp1-sansa Release: Detached signature file '/var/lib/apt/lists/partial/dell.archive.canonical.com_updates_dists_bionic-dell-beaver-osp1-sansa_Release.gpg' is in unsupported binary format E: The repository 'http://dell.archive.canonical.com/updates bionic-dell-beaver-osp1-sansa Release' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: GPG error: http://dell.archive.canonical.com/updates bionic-dell-service Release: Detached signature file '/var/lib/apt/lists/partial/dell.archive.canonical.com_updates_dists_bionic-dell-service_Release.gpg' is in unsupported binary format E: The repository 'http://dell.archive.canonical.com/updates bionic-dell-service Release' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. Go to Software & Updates, card Other software, find and remove these repositories (you have option for this, remove all with E (error)). That's it. Do not expect to stuck at "Refreshing software cache" any more. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1850966 Title: Stuck at "Refreshing software cache" after enabling repository not updated for Eoan To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1850966/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
