Four days running on SL7x:
Failed to check for updates with the following error message:
Failed to build transaction: xorgxrdp-0.2.8-3.el7.x86_64 requires
xorg-x11-server-Xorg(x86-64) = 1.20.1
Latest available, and installed, is 1.19.5-5.el7
{^_^} Joanne