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Why will my MacBook no longer log in to my wifi?

I no longer appear to be able to log on to my wifi network.

I have deleted historical link and re-entered the password but do not get a valid IP number in the systems set up.

I have set a valid IP manually using the DHCP tab but while Mac appears to log on to network it will not open any Internet applications.

Anyone any ideas?

MacBook Air, OS X Yosemite (10.10.2)

Posted on Mar 27, 2015 10:55 AM

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Why will my MacBook no longer log in to my wifi?

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