WiFi: No Hardware Installed after Mojave upgrade

Thank you so much!!! This was my third try installing Mojave on my MacBook and I was hoping 10.14.2 would finally have solved this. Turns out it was this old system config file. Such a simple fix after hours and hours of pain installing and then restoring to High Sierra twice now.

Thank you so much! This solved the problem for me!

I had tried to upgrade several times and kept running into this problem. The last time I did again, but somehow used the right search terms to find this thread and answer! Now I'm running Mojave! Thank you again!

Hi I have same issue now I have Mojave installed which was working fine until I tried to install usb to lan (Ethernet) when I restated the msg come you computer is not connected to internet. No hardware installed

please guide me how resolve the issue I have reset SMC and PRAM and found no file sysctl.conf

Thankyou Jeff for the reply.

I am using MacBook Air. When I got hard drive I cannot find any Macintosh directory. There are only applications, library, system, users, folders only. There is no volumes folder even.

Hi how can I reinstall WiFi drivers from scratch to repair the corrupt files if there is any. I have checked WiFi is working perfectly when I enter in either apple hardware test or in recovery mode. So this proves my hardware is working but something wrong in Mojave’s os

Yes exactly I was trying to install Ethernet adapter in Mojave’s then when it restarts even WiFi not working now I am stuck with any internet. I have ordered thunderbolt Ethernet adapter now let’s see if it works. Meanwhile if there is another manual setting to bring back WiFi please do let me know. Thank you all

THANK YOU!!!! I was horrified. You saved my night!

To others who are unfamiliar with terminal and Unix commands:

ls -l

^This command means: list with long format, show permissions (the 'l' is lower case 'L')

/etc/sysctl.conf

^This is the folder and file name

sudo

^Means super-user do, execute with root privileges (as in, you're the boss)

mv

^Short for move. Moves files or directories from one place to another. If both filenames are on the same filesystem, this renames the file.

/etc/sysctl.conf /etc/sysctl.conf.bak

^Changes the file name from sysctl.conf to sysctl.conf.bak

I'm so happy this worked. JoeMan71 is my hero.

Does anyone know if the Mojave no wi fi hardware found glitch has been solved in any of the Mojave updates apple has released? I found offending file in the terminal search but do not know how to get rid of it.

JoeMan71 you are the man!

Just followed your instructions on a 2016 Macbook (m3 processor).

The computer was sluggish all of a sudden after the upgrade to Mojave, plus there was no WiFi installed.

I got rid of the problematic file (dated from 2013, oddly enough!), rebooted, and the Mac was back in business!

Thank you for taking the time to post these steps. I do not normally write on forums, but I signed into this one, just so I could thank you!

Isn't that something the end user can do as well, without a trip to the Apple Store?

Anyone know if Apple is even aware of this issue? I've been watching the headlines and nothing has yet been mentioned about a known problem disabling all connectivity under Mojave.

To be fair, this seems to be affecting a very small population of us. My iMac is the current maxed out version so I don’t think this is any kind of plot to convince everyone to upgrade. 🤔

Okay, I'm going to try the Time Machine option first.

Thanks that’s exactly what I needed to make sure I didn’t screw it up the first time. Per your instruction the user’s machine is restoring.

Thanks much!

Will try it when I get home. Excited this might be it ! 🏾