Exclamation point in WiFi symbol

My iMac (sierra) will not connect to the internet. There is an exclamation point in the wifi icon and when i go into preferences i see that it is setting its own IP address. There are other Macs in the house that connect with no problem - I have tried a whole bunch of remedies, including a complete factory fresh re-install but nothing works


PLEASE HELP!!!

iMac (27-inch, Late 2012), OS X El Capitan (10.11.5)

Posted on Mar 4, 2017 3:55 AM

Reply
2 replies

Mar 5, 2017 11:13 AM in response to WatsonsDad

Hi, how many other devices are connectring?


Make a New Location, Using network locations in Mac OS X ...


http://support.apple.com/kb/HT2712


10.5, 10.6, 10.7 & 10.8…


System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.


10.5.x/10.6.x/10.7.x/10.8.x instructions...


System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.


The interface that connects to the Internet should be dragged to the top of the list.


If using Wifi/Airport...


Instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.


For 10.5/10.6/10.7/10.8, System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...


208.67.222.222

208.67.220.220


(There may be better or faster DNS numbers in your area, but these should be a good test).

Click OK.

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Exclamation point in WiFi symbol

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