IIS is no longer used as no website are in it. So i removed it to see if it might be a cause ... no luck
I had another contact, and no luck again, none of what i was suggested resolved my issue.
As it s a production server, and a vmware server, reverted it back to his orginal functionnal state (11.0.7) and support told me to wait for the next release that should happen this month.
Too bad it's not working, I was enthousiasted about the 12.x version and now feeling a little disappointed ...
But as i'm a curious IT, i'll start a new server, push 11.0.7 SEPM and try a migration. As i told my support contact, this server was originally a 11.0.1 (or .2, can't remember) then upgraded trought all releases to finally end in 11.0.7 so maybe the successives upgrades may have alter something ...
Is it possible to add a new server to my existing infrastructure that could operate as stand alone ?
I mean can i install a fresh 11.0.7 but that will have all the groups and policies that i had created into my production server ?