Wifi won't turn on after upgrade to Catalina

Almost exactly the same here, early MBP 13“. After a couple of days of Catalina, on one day it had difficulties connecting, the day after nothing worked.

„do Not loc“ only for a few seconds, after that it shows only „activate WiFi“, but it isn’t possible, it’s greyd.

No chance to even start WiFi diagnostics.

with my usb/Ethernet dongle I was able to install the latest 10.15 Update - still no wifi. pram reset etc.

next step: Apple Store

The Apple phone Support nailed it down to a hardware problem. Shut down, press d and turn on, then a diagnosis Programm runs your system. they sent me to a Shop. They told me the installing of a new airport module will cost me 160€.

great. Update and 160€. didnt do it. My hope is that’s a driver issue. Til then I will buy a 10€ usb wifi stick

I didn’t get the usb WiFi yet. Meanwhile I bootet from a high Sierra disk, thought I can at least email work businesses, but on High Sierra the WiFi Hardware is completely gone.

So, after updating to Catalina it seems that something messed with the airport module.

Also, in sleep mode the MBP seems to crash, and starts only new. Furthermore it seems to use more battery life than usual.

thank you for the tip with the iPhone! I’ll try that, for at least doing email correspondence on my travels.

what a nightmare.

How were you able to do that? I have an airport I back mine up on, but obviously I can’t restore it because I can’t get WiFi.

I’ve tried nearly everything- several different cords, WiFi through the iPhone, WiFi usb attachment- nothing works. If I could just pick up my home WiFi signal I could do it. Did you just restore it to factory settings?

This has been a total disaster. It is unbelievable apple didn’t even test run the update on systems not even that old. Complete waste of time and currently has irreversibly messed up my MacBook. What a joke.

Exact same computer, exact same problem. Did you guys get this fixed?

Goodness that sucks. The wifi stick worked? I was able to connect my phone and use my phone's internet by a USB. I might just revert back to my last saved back up and never update again.

Iphone connection via USB and Wifi worked. This will do it for now, thank You!