WiFi: No Hardware Installed after Mojave upgrade

My MBP is the same as yours and I am experiencing the same. I have done the tings you listed off, as well as reinstalled Mojave through Recovery (wifi works for that part, just not in Mojave) with no luck.

Additionally, Mine isn't recognizing USB flash drives (to backup files) or the Thunderbolt Ethernet adapter either.

I’m in the same boat as the rest of you. Mac user since the days of 9” B&W screens, tried every, calling Apple support once I get a cup of coffee. I’ll let you know what the story from Apple is later today.

Spent half an hour on the phone with Apple Support yesterday. Have a Genius Bar visit with a Senior Tech calling in scheduled for this afternoon.

Found out this is a known, documented (inside Apple) issue.

Will post an update after my Genius Bar visit.

Thank you, I will stay tuned. I am not excited enough about Mojave to haul my iMac into the Apple store. Fortunately for now I have a work Dell I can use till this is resolved. If the resolution isn’t an easy fix, then I will just restore High Sierra till perhaps an update is released.

Please let us know what the Fox is...if there is one😉

Mac Book Pro late 2013 16 gig memory I 7 processor. I have the same problem and did all the same reboots. I had the apple store clean sweep my hard drive and reload Mojave. Mojave ran fine until i did a time machine reload. I then had the same problem. I had to go back to the Apple Store and have them reload High Sierra. then I reloaded my time machine back up and All was good. I will not try Mojave again until Apple figures out what is wrong.

Just left the Apple store (1 hour 20 minute visit). We found that the Fusion drive was incorrectly defined.

Machine is OK after splitting the logical Fusion drive into its physical components, erasing them, rebooting, re-establishing the Fusion drive and doing a clean install of Mojave.

On my way home to restore my data (not the apps or system settings). I’ll reinstall my apps from scratch.

Thanks for the follow up! Unfortunately, I don’t have a fussion drive and even if I did, I wouldn’t know what to do with it. I have a solid state internal drive. Perhaps the external drives are messing with Mojave. Not sure why that would shut the WI-FI down but who knows. Going to go home, try booting up and “doing things” without the externals plugged in. If that fails, going back to HS, and will just monitor this thread for updates.

My call today with Apple support was not productive. Went through all the generic fixes, predictably to no avail. Recommendation was to take the iMac in to an Apple Store (not happening, health prevents me from driving 90 minutes each way) or local authorized repair center, obviously this is not a hardware problem. Fortunately I made a bootable copy just before updating (long time SuperDuper user), just restored the iMac from that and all is well. For what it’s worth, they did say Apple was aware of the issue and working on it.

Postscript:

My suspicions are that Mojave‘s installation in rare cases is problematic (no kidding). I think it’s due to APFS being implemented as part of the Mojave install and that in my case the switch to APFS was not flawless.

Well, folks, I feel a bit bad for throwing in the towel, but, I just downgraded to High Sierra. I can't find a solution short of carting my computer to the Apple store, just so I can get dark mode. I will keep monitoring this thread and if someone comes up with a definitive solution, I might try again...or wait till the .1 version of Mojave.

Thanks for all your attempts to help.

I have had this same problem when updating to Mojave the date it was released, i have contacted apple support with no help at all, this is something that you must do on your own, but i was able to resolve my problem by creating a time machine and restoring back to High Sierra, tho i lost all my applications. I keep my data with the Time machine in Mojave but you must manually look for your files because you can't restore data from a high firmware to low. I believe it's an OS problem with some Mac's ( i have the 2016 MACBOOK PRO 13' Touchbar ). So i would suggest not to update to Mojave and go back to sierra till the next version of Mojave is available. Current version available atm is 10.14 so i suggest to wait to 10.14.1 or later

Same problem here, and I started with a MacPlus!! After upgrading current MBP (Retina 13", mid 2014) to Mojave got the "WiFi no hardware" error, slow as ****, non-responsive, same as others have reported. Tried everything I could. Went to Genius bar, HW checked out OK, funny enough their diagnostic tool showed "no MacOS" ... spent 3 hours for them to reinstall Mojave, but same issues as before. Ended calling Apple, their engineer was nice but couldn't figure out what the problem might be.

After wasting 2 days, I finally reverted back to HS (Recovery mode, Time Machine B/U, but had to connect to my router via Thunderbolt-Ethernet adaptor).

Recovery took 9 hours but I am back to HS and where I was before Mojave destroyed my MBP.

So, a loud BEWARE: DO NOT UPGRADE TO MOJAVE.

Apple needs to fix the problem quickly if they care about their customers.

Wonder if this is another way for Apple to force mac owners of older computers to buy new Macs ... just saying!!!

Bottom Line: nothing you can do . Go back to HS and hope you have a B/U before you got sucked into Mojave.

For those of you who have gone back to High Sierra: What are the steps you used please?

I am talking someone through this over the phone, so don't want to fumble about trying the wrong things first until I get it right. For example, can I just instruct the user to restore from the last Time Machine backup before she upgraded to Mojave? Or do I first have to have her install High Sierra from an external drive (I've already set up an external install drive)? And when installing from external, do I do a clean install (wipe the Hard Drive) or can I just do a normal install over Mojave?

Thanks!

My experience, others' may vary, was that doing a clean install followed by Migration Assistant where you migrate everything except "Other files and folders" from an existing High Sierra clone was what worked. Restoring from a Time Machine backup did not work for me, and in fact seemed to restore an app that I had deleted.