Question

Wifi could not connect after upgraded to El Capitan

Dear all,

I would like to ask for your help. After upgraded to the leader El Capitan, my Macbook Air (2013 model) could not connect to Wpa secured wireless network.
it showd the wireless network could not be connected, but I able to connect internet with iphone/iPad hotspots (with iOS9.02 installed). i believe the network hardware device on my MBA should working fine, in order to verify that I downgraded the OS back to Yosemite (by time machine) and the wifi connection works perfectly.

I also tried to clean installed El Capitan by creating another partition on the MBA and see whether I can resolve this wifi issue, but no luck.
Could anyone help? Does anyone have the same issue as mine?

Many thanks,

Kenny

MacBook Air, OS X El Capitan (10.11)

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