How to fix the “Cannot retrieve repository metadata (repomd.xml)” error in Fedora

Edit two of your repository files: /etc/yum.repos.d/fedora.repo and /etc/yum.repos.d/fedora-updates.repo. Now un-comment all the lines that start with the term baseurl and place a comment before all lines that start with mirrorlist. This should be done for both the above files.

Now edit /etc/hosts file and append the following to it’s contents:

80.239.156.215 mirrors.fedoraproject.org
213.129.242.84 mirrors.rpmfusion.org