It's also a fairly straight forward fix, basically remove the back cover, disconnect the Wi-Fi and Bluetooth antenna, then remove the AirPort card. You'll just need a replacement AirPort adapter which is fairly inexpensive. If the problem persists, it's a hardware issue.
To verify that it's not a software issue, you should boot into Safe Mode (hold ⇧ Shift) and/or Recovery Mode ( ⌘ Command R). So, it's completely plausible that one radio has failed (5GHz) while the other (2.4GHz) continues to function this is what you're seeing. The critical part related to your issue is the "dual-band" WiFi it uses two different radios, not one. On your particular Mac, it uses the BCM94360CS custom SoC (System on Chip) that supports dual-band WiFi and Bluetooth. Most likely your Airport Card has failed. Lastly, below are some of the details of the network setup in my Wi-Fi router. I am 100% sure that the password is correct as I've tried several times (also setting up the 5GHz on different routers). Interestingly, I get the same error when the authentication method is set to "Open". The Macbook is able to see the network however, when I try joining the network, and I enter the password I keep getting an error "the wi-fi network requires a WPA2 password".
Best wireless router for mac 2019 pro#
I have a MacBook Pro (Retina, 15-inch, Mid 2014) running on MacOS 10.14.3 (18D42) and since some time I have been unable to connect to any 5GHz WiFi networks while 2.4GHz networks from the same routers are ok.