There are ways to back up a computer that isn't fully functional. Backup is always a must, and when you're having any kind of trouble with the computer, you may be at higher than usual risk of losing data, whether you follow these instructions or not. The backup is necessary on general principle, not because of anything in the test procedure. If you don't already have a current backup, back up all data before doing anything else. But with the aid of the test results, the solution may take a few minutes, instead of hours or days.Ģ. It changes nothing, for better or worse, and therefore will not, in itself, solve the problem. the issue is that after the DNA resolution error happens, no device is able to resolve any address and i have to refresh the router's (WAN) IP address from the ISP.ġ. The strange thing is that I have iphone's, ipad's, a dell laptop, an old macbook, another Mac Air (my wife's - running same osx version) and the issue appears ONLY when I connect my own Mac. I did try calling my ISP and went through router reconfig, reset etc etc. changing wifi band from 2,5 Mhz to 5Mhz etc - doesn't workīasically there is no improvement whatever I try and this is getting totally annoying and impossible to use. assigning static dns servers to both mac and router (opendns, google) individually and separately (one at a time) - doesn't work renewing only the ip lease of my mac from the router's dhcp server - doesn't work I'm having serious problems when at home as it seems that everytime I connect to my wifi, after a few minutes the mac and the router aren't able to resolve dns anymore so I have to refresh the IP of the router from my ISP through the router's web admin page (D-link DIR-865 L).
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