Il 06/12/18 20:54, Jerry Geis ha scritto: > I have a number of updates to C7.6 > but now I am getting > > Cannot find a valid baseurl for repo base/7/x86_64 > > Did something happen? What do I do ? > This machine has internet access and appears to resolve other sites. I get > a list when trying to access mirrorlist... > > Thanks, > > Jerry > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > Hi Jerry, I got the same sort of problem times ago. My problem was that a centos base mirror did not release centos update and I needed to change my base repos. I don't know why you can't resolve other sites. First of all you can try resolving same dns with nslookup and see if it resolv dns. If yes then try: # yum clean all # yum update else you can try to resolve dns with another dns address like: # nslookup basedns IP List of new dns: Google: 8.8.8.8 - 8.8.4.4 OpenDNS: 208.67.222.222 - 208.67.220.220 Cloudflare: 1.1.1.1 - 1.0.0.1 My 2 cents