[CentOS] centos 7 :: cannot update

Sat Aug 13 08:44:41 UTC 2016
Adrian Sevcenco <Adrian.Sevcenco at cern.ch>

Hi! I have a very strange problem with my centos 7 vm : i cannot update!!
I have normal ingress/egress access but my yum update fills my screen with :
[Errno 14] HTTP Error 404 - Not Found

i already done "clean all"  ...
anyone seen this problem? any idea about the issue and workarounds?

Thank you!