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iMac will not connect to Wifi Networks after System Update

Posted on 2014-07-29
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Last Modified: 2014-08-12
I have an iMac which is about a 2007-08 model.  It had osx10.8 on it and I updated the software to osx10.9 the other day.  Since the update it will not connect to ANY wifi network.  We have tried multiple networks and it will not connect to any.
If I set the IP address to static it will connect but no internet access.

It detects all networks fine but just will not connect.

Help please
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Question by:mbelletty
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Expert Comment

by:Joshua Grantom
ID: 40228280
Macintosh HD/ Library / Preferences /

 
Drag the ‘SystemConfiguration’ folder to the trash or just delete it but do not empty the trash just yet. You may need to drag it back to restore your network settings to the previous.
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by:mbelletty
ID: 40238119
Where do I find the system configuration folder
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Joshua Grantom earned 500 total points
ID: 40238752
Under Macintosh HD/ Library / Preferences /
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