First I've seen this. I've recently installed packages like this and NOT seen this. Is it something to worry about? # zypper install somepackage Retrieving repository 'Packman Repository' metadata ..........................................................................................................................................[done] Building repository 'Packman Repository' cache ...............................................................................................................................................[done] Retrieving repository 'Update repository of openSUSE Backports' metadata .....................................................................................................................[done] Building repository 'Update repository of openSUSE Backports' cache ..........................................................................................................................[done] Warning: File 'repomd.xml' from repository 'Update repository with updates from SUSE Linux Enterprise 15' is unsigned. Note: Signing data enables the recipient to verify that no modifications occurred after the data were signed. Accepting data with no, wrong or unknown signature can lead to a corrupted system and in extreme cases even to a system compromise. Note: File 'repomd.xml' is the repositories master index file. It ensures the integrity of the whole repo. Warning: We can't verify that no one meddled with this file, so it might not be trustworthy anymore! You should not continue unless you know it's safe. File 'repomd.xml' from repository 'Update repository with updates from SUSE Linux Enterprise 15' is unsigned, continue? [yes/no] (no): no Retrieving repository 'Update repository with updates from SUSE Linux Enterprise 15' metadata ...............................................................................................[error] Repository 'Update repository with updates from SUSE Linux Enterprise 15' is invalid. [repo-sle-update|http://download.opensuse.org/update/leap/15.4/sle/] Valid metadata not found at specified URL History: - Signature verification failed for repomd.xml - Can't provide /repodata/repomd.xml Please check if the URIs defined for this repository are pointing to a valid repository. Warning: Skipping repository 'Update repository with updates from SUSE Linux Enterprise 15' because of the above error. Some of the repositories have not been refreshed because of an error. Loading repository data... Not seen this.