Fedora 22 Software Installer is Blank

Go to /etc/yum.repos.d/

Edit fedora.repo and fedora-updates.repo
Remove the # from all lines that start with #baseurl
Insert  # at the beginning of all lines that begin with metalink

Now edit the /etc/hosts file and add the following lines at the bottom

Install rpmfusion free & nonfree repos from rpmfusion website
in the rpmfusion repo files:

Remove the # from all lines that start with #baseurl
Insert  # at the beginning of all lines that begin with mirrorlink

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

As superuser run the following command

pkcon refresh

It is also important to restart the computer before attempting to install software