In order to flush or reset DNS on your mac computer running either OSX El Capitan or Yosemite, you’ll need to use the “Terminal” interface and a special command.
- Open up the Terminal program by pressing Command+Space (or find it under Utilities)
- For 10.11 and 10.10.4
- Enter “sudo dscacheutil -flushcache;sudo killall -HUP -mDNSResponder;say flushed”
- Press enter key and then key in your password when prompted
- When you hear “flushed” from the speakers you know it’s completed…
- For 10.10., 10.10.1, 10.10.2, 10.10.3
- Enter “sudo discoveryutil mdnsflushcache”