WiFi 'port' only works for LAN access but not for WAN (ie, the internet)?

Started Oct 6, 2013 | Discussions thread
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noirdesir
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WiFi 'port' only works for LAN access but not for WAN (ie, the internet)?
Oct 6, 2013

My MBP yesterday suddenly had some sort of WiFi failure. When connected via WiFi to my Time Capsule, it can still see the TC disk but has no internet access anymore, but when connected via Ethernet it still can do both. Same problem when I connect my MBP via WiFi to an Airport Express. And other devices (iPad, iPhone) still work fine on WiFi with my TC (or Airport Express). And it is not an OS problem as booted from a fresh Mavericks installation shows the same problems. I also cannot create a WiFi network from my MBP (it fails with an error).

I'm pretty sure it is a hardware/firmware problem (and it occurred a day or two after a MBP firmware update) but I find it curious that LAN connections still work. And I do have AppleCare but I naturally hate having to bring it in and not be able to use it for several days.

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