Hi, All. I noticed that: The certificate of https://mirrors.rpmfusion.org/ expired on June 4, 2017 at 5:41 PM. The current time is June 4, 2017 at 6:26 PM. And, with rpmfusion enabled, dnf upgrade reported: Error: Error downloading packages: Curl error (60): Peer certificate cannot be authenticated with given CA certificates for https://mirrors.rpmfusion.org/metalink?repo=free-fedora-updates-testing-2... [Peer's Certificate has expired.] Is this OK? -- Robert Lu <robberphex(a)gmail.com&gt; About me: http://about.me/RobberPhex