A security policy in place prevents this sender from sending this message to this recipient, see message bus configuration file (rejected message had interface “org.freedesktop.PackageKit.Transaction” member “Cancel” error name “(unset)” destination “org.freedesktop.PackageKit”)

Login us root and run this commands

#yumdownloader –disablerepo=updates,updates-testing dbus dbus-x11 dbus-libs
#rpm -Uhv dbus* –oldpackage