2018 MacBook Pro randomly losing WiFi connection

@Mac-Trek

by the way, what is your wirelesss router or AP? Can you find out what chipset it uses? If not, please post the model here, and I will try to find out.

What do you see for model information in the network utility??

@Mac-Trek:

Have you turned off AirPlay on your Apple TV3?

Any Microwave or TV closer than the Router?

What signal strength shows when it drops?

Recently found that using the Microwave in the kitchen I'd lose & couldn't reconnect while it was running.

Good work & interesting. Maybe search the logs around just before the disconnect?

How to troubleshoot Wi-Fi connectivity - Apple Support

I have this same problem on the same model MacBook Pro, but I have not yet installed "macOS High Sierra 10.13.6 Supplemental Update 2 for MacBook Pro (2018)". That update still shows as waiting to be installed in the App Store.

So, at least for me, that update is not the cause of the problem.

The problem for me is infrequent, say 1-2 times per week. It has also happened on different networks in different locations, so the problem is unlikely to be the network equipment. This problem never happened on my 2015 MacBook Pro in the exact same locations.

I have this same very issue with a new 2018 Mini which came pre-loaded with Mojave.

What WiFi technology are you using at home? I have a home Meraki setup, and the logs simply state the device is disconnecting - no errors otherwise. But on the device, the wireless icon is grayed out like I manually disconnected.

This only happens if I'm passing traffic - when I first got the new Mini, I transferred data over WiFi, and every 15 minutes it would drop.

If the Mini just sits there idle, it will stay connected to WiFi forever.

Today, I heard of someone else having the same issue where they were unable to upload a large file because wireless keeps dropping on them. I'm in the process of finding out if they are running Mojave.

You have to try all of them, and at the same time when trying you can also run broadband speed check, to see the difference in performance..it is an indication, also switch off the automatic channel mode of the router, so it won't keep change channels..

Yes that is exactly the sam thing happening here at home with me and strong signal still disconnecting, only after I change router channels was steady for 2 days, and then it started play again, but to be clear you have to delete everything especially your home wifi, and then really again this and the password from the beginning. clear everything !

Well I do have the Malwarebytes running on my MacBook Pro all the times, and yet still I had this problem.... the only think that solve it is to completely remove all the networks one by one, and then apply the home again.

Also I clean the system with Cleaner...

I have eight Apple devices using Wifi on our Comcast Gateway Router. Also five other non-Apple devices. All the devices work fine except for the 2018 MacBook Pro 13" with power bar. I have run a variety of experiments at other locations, taken it to an authorized dealer, spent hours with Apple Care doing date capture and wireless diagnostics and finally brought the laptop to an engineer at an Apple store. We tested it there and could find no hardware problems. I was there for 2.5 hours while we wiped the hard drive and downloaded the Mojave OS again. The laptop worked perfectly at the store. It also works perfectly at other locations. The issue is isolated to my home.

I had Comcast re-provision the router and run other tests and everything was fine. I then hooked up my five-year old AirPort Extreme and used that wifi for a time and had no problems at all, except for slower speeds. My conclusion, and the conclusion of other folks I've spoken with, is that there is something different in my computer that the router in my house doesn't like. They don't like each other for some reason; perhaps the new chip in the laptop is defective or the antenna is faulty, but I can't prove that. I am going to pay out-of-pocket for a better router with a stronger signal. I suspect that will solve the problem.

Good luck to all of you. Life is short and I've already expended more of my time on earth than warranted. On to better things.

PS, Yes I changed the channels multiple times, cleared out the links in wifi preferences, bowed multiple times to all the sacred directions.

High Sierra, Mojave is not the cause. It happens also after upgrading/downgrading or completely reinstalling. I am pretty sure it is a mainboard problem. New cheap cards from Aliexpress do have the same problem and I swapped the Wificards with MacBook Pro 15" cards (original) and the same problem keeps occurring. I will not even try to send it to Apple for a repair because you always get the same advice. "buy an new computer", "replace the mainboard" or use and external wifi dongle instead... (which will cut you off from iMessage and FaceTime) I think I will send it to a good third party Repairshop to see if they can find the problem.

Hi,

Been having the same problem for ages, WiFi just drops, sometimes wont even reconnect. If you google it it looks like loads of people have been having the same problem...

Tried everything i knew, tried everything online, went to the apple store (i'm a comp sci undergrad, it was painful) was told it wasn't hardware fault it was my settings/programs messing with it. Finally bit the bullet and did a full factory reset and still it kept happening.

Went back to square one tried everything bit by bit. Tonight have founds it doesn't happen (or at least hasn't been happening for a few hours when it had been every 10 to 30 minutes is) if my phone isn't connected to the same wifi network as my laptop...

Luck or sheer coincidence, who know =/ Ive got Got a 2017 macbook pro base model (the usb-c one with i5 and 8gb ram) and an iPhone XS. Hope this helps anyone else out because its been driving me round the ******* bend.

Besides the Apple Watch's Auto-Unlock with Apple Watch feature using AWDL, also the Apple TV AirPlay feature has an option called Also Allow Nearby to Airplay option Settings > AirPlay > Allow Access

This option also uses the AWDL protocol, and may be the culprit for the Mac's Wi-Fi issues (as described in the WiFriedX article linked in one of the posts above. Could you also state if you have an Apple TV in the vicinity with this option enabled?

Thank you.