My MacBook sometimes can't connect to the internet. Chrome displays "Resolving host" but a web page doesn't appear. Safari also doesn't work. Interestingly, sometimes Google seems to work as the only web page (also auto complete in Google). After some time (or sometimes when I call "dscacheutil -flushcache") it works for a few minutes and then the issue occurs again.

Other devices always work so it has to be related to my MacBook. I'm using two DNS servers pointing to When the issue is present Ping doesn't work (ping: cannot resolve www.google.com: Unknown host) and Lookup doesn't work too (www.google.com -> The operation couldn’t be completed. (kCFErrorDomainCFNetwork error 2.))

A few month ago I had the same issue. At the time I had to delete some files in the LaunchDeamons-folder but I can't remember which ones...

Anything I could try?

Update: If I add a second "Location" (in the Network preferences) I can simply switch to the other location and I'm back in the Internet... pretty tedious solution...

  • How about settings I described here: apple.stackexchange.com/a/245986/145449 the situation is different, but these would be first things to try. – techraf Jul 20 '16 at 7:19
  • I just tried but after a few minutes the problem is back... – Dunken Jul 21 '16 at 18:28
  • Just for grins and giggles, does the problem exist if you connect via Ethernet? Can you test that out? – Allan Aug 28 '17 at 18:46
  • Yes, this seems to work but this not really an option... – Dunken Sep 1 '17 at 7:00
  • 1
    If it works in Ethernet (on the same network), the problem isn't related to DNS. The issue is the adapter. To prove this, try a USB WiFi adapter - a cheap one (or better yet borrowed) will do fine since it's for testing. If the problem goes away, it's your WiFi Airport card. – Allan Sep 1 '17 at 15:33

Does the issue eventually come back when creating another location? If not, this is being caused by settings.

  • I use two locations as a workaround. Whenever I switch locations it works again for some minutes. – Dunken Aug 30 '17 at 7:42

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