Hi, DNF says: Failed to synchronize cache for repo 'rpmfusion-nonfree', disabling. Failed to synchronize cache for repo 'rpmfusion-free', disabling. and then failing with: package mplayer-1.2.1-2.fc23.x86_64 requires libavcodec.so.56()(64bit), but none of the providers can be installed (try to add '--allowerasing' to command line to replace conflicting packages) This is because: http://mirrors.rpmfusion.org/mirrorlist?repo=free-fedora-24&arch=x86_64 -> http://download1.rpmfusion.org/free/fedora/development/24/x86_64/os/ But http://download1.rpmfusion.org/free/fedora/development/24/x86_64/os/ is 404 as the real data is now at: http://download1.rpmfusion.org/free/fedora/releases/24/ It is surprising that the mirror servers seem to contain more frash data than the central list at: http://mirrors.rpmfusion.org/mirrorlist Jan