To whom it may concern... On a new machine with openSuSE Leap 15.3 i did (as root and according to https://wiki.trinitydesktop.org/OpenSUSE_Trinity_Repository_Installation_In…) rpm --import http://mirror.ppa.trinitydesktop.org/trinity/rpm/opensuse15.3/RPM-GPG-KEY-t… zypper ar http://mirror.ppa.trinitydesktop.org/trinity/rpm/opensuse15.3/trinity-r14/R… trinity zypper ar http://mirror.ppa.trinitydesktop.org/trinity/rpm/opensuse15.3/trinity-r14/R… trinity-noarch without a problem. But the next command zypper refresh produced this: Retrieving repository 'trinity' metadata ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------[\] Signature verification failed for file 'repomd.xml' from repository 'trinity'.     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: This file was modified after it has been signed. This may have been a malicious change,     so it might not be trustworthy anymore! You should not continue unless you know it's safe. Signature verification failed for file 'repomd.xml' from repository 'trinity'. Continue? [yes/no] (no): no Retrieving repository 'trinity' metadata ............................................................................................................................................................................................[error] Repository 'trinity' is invalid. [trinity|http://mirror.ppa.trinitydesktop.org/trinity/rpm/opensuse15.3/trini…] 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. Skipping repository 'trinity' because of the above error. Retrieving repository 'trinity-noarch' metadata .....................................................................................................................................................................................[error] Repository 'trinity-noarch' is invalid. [trinity-noarch|http://mirror.ppa.trinitydesktop.org/trinity/rpm/opensuse15.…] Valid metadata not found at specified URL History:  - File './repodata/df43098b8eb4b9b9c38b0bdd574746245eefd9ee3a6677672736a3db059791b9-primary.xml.gz' not found on medium 'http://mirror.ppa.trinitydesktop.org/trinity/rpm/opensuse15.3/trinity-r14/RPMS/noarch'  - Can't provide ./repodata/df43098b8eb4b9b9c38b0bdd574746245eefd9ee3a6677672736a3db059791b9-primary.xml.gz Please check if the URIs defined for this repository are pointing to a valid repository. Skipping repository 'trinity-noarch' because of the above error. Some of the repositories have not been refreshed because of an error. The mirrors on https://ftp.fau.de/trinity/trinity/rpm/opensuse15.3/trinity-r14/RPMS/x86_64 http://mirror.nasutek.com/trinity/trinity/rpm/opensuse15.3/trinity-r14/RPMS… http://tde-mirror.yosemite.net/trinity/rpm/opensuse15.3/trinity-r14/RPMS/x8… are showing the same problem. CU Peter