[PapaParrot]

Just to calrify, this is what I installed:> xfce-4.12p10.tgz https://ftp.openbsd.org/pub/OpenBSD/6.5/packages/amd64/
But yes LeFrettchen is correct, "xfce4" will not work, "xfce" or the full name "xfce-4.12p10.tgz", is needed.