2018 MacBook Pro randomly losing WiFi connection

I know it's been some time since this was posted, but I think I found a solution. I was getting drops from my wifi connection once every 30-60seconds, but for whatever reason, only on my 2.4Ghz wifi. The 5Ghz would not express this issue.

At any rate, I solved the problem in Mojave 10.14.4, it seems, by connecting to the wifi in question and doing the following:

• System Preferences
• Network
• Wifi > Advanced
• TCP/IP tab
• Configure IPv6 - change from "automatic" to "manually"

I did not fill out the fields there at all (router, etc)

Like I mention before here, I had this problem and after experimenting the only action that cure it was to delete all the saved wifi, and then reapply the one that I am using... Perfect 5 months now...

I think you hit it spot on...I had recently enabled "Allow your Apple Watch to unlock your Mac" even though I have the touch id and that is when I started seeing wifi dropping off at random times. Of course, at the time I didn't equate the 2 events until I came across your post. After I disabled "Allow your Apple Watch to unlock your Mac", all appears to be good again. I'll post back if things start to go south again though...

I purposefully removed all USB devices. Just have power plugged in.

I have a Samsung phone always nearby, as one does. There is a TV and PS4 about 10 feet away. Kitchen items are far enough away. I should note again that my 2015 Macbook is used in the same location without issues.

I'm currently looking at the manpage for networksetup to see if I can use it to detect the issue and reconnect automatically. I'll be back...

Recapping the steps that gave me relief...

• Disabled Wake for WiFi Access in Energy Preferences
• Allow me to be discoverable by : No One in Airdrop
• Disabling AWDL (see below)

My symptoms were a constantly dropping VPN (every 3 minutes), which can happen because of unstable wireless, and also because of changes to one of the other network interfaces (including a virtual one 'awdl0' that was still being triggered every ~30 minutes). To try this fix, issue the following command in a terminal window to shutdown that virtual network port:

sudo ifconfig awdl0 disable

This command is only sticky until the next time you open the lid; there's an app (below) that keeps the command in effect. Some of my colleagues have seen a fix using just this command without changing the first two settings, so maybe try it first.

More details on all the above, including what you give up by disabling awdl0 (it's not much):

https://medium.com/@mariociabarra/wifriedx-in-depth-look-at-yosemite-wifi-and-awdl-airdrop-41a93eb22e48

I've been having a similar, if not the exact same issue as being described. I previously had a 2015 rMBP. On heavy network loads, the networking would stop. MacOS wouldn't say I'm disconnected, but I would not be able to reach anything network wise. I narrowed down the problem to having issues with 802.11AC connection. I had this problem on two different wireless APs. The first AP is a Sophos AP55 Access Point, and the other is a TP-Link ARCHER-C7 v4 running DD-WRT (Side note, 802.11N on 5GHz works fine with no issues, and I can specify N only with the TP-Link). I resigned it to maybe my wireless card in the 2015 rMBP was going bad. A couple of weeks ago, I moved on from the rMBP to a 2018 Mac Mini.

I figured since I'm on new hardware, I'll move back to the Sophos AP55. I started getting the exact same issue. Under heavy network load, all networking would stop. I switched to the TP-Link and set it to 2018.11AC for testing.. and sure enough, heavy load stopped the networking. So now I'm back to 802.11N.

Does this sound like the same issue as being described here? Also, I noticed the issue around the time that I upgraded to High Sierra. I think Apple might have a bug in the wireless stack somewhere

I have a Mac currently (25 June 2019) loaded with OS Mogave 10.14.5 . My Mac starts alright, but moving from from BBC news to Yahoo mail to Met. Office weather forecast applications inevitably drops connections. The only (and irritating and time wasting solution) is to do a manual restart. I have had this "dropping connection" problem for about five weeks now.

The problem is in need of an urgent solution.

John.

Works fine here in 10.13.6

Make a New Location, Using network locations in Mac OS X ...

http://support.apple.com/kb/HT2712


System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.


Instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.

System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...

8.8.8.8

8.8.4.4

System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.

The interface that connects to the Internet should be dragged to the top of the list.

Apply.

Same problem on brand new 13" MBP Touch-bar.

Great, thanks for the report.

Ah, didn't realize that.

How many devices can it handle at once?

I found that one has to click on Wifi icon with Shift+Option key commands to reveal system debug menu. It will show 2 options: wifi monitor, enable logging. If I find something I will report it here.

Time Capsule 2013 uses Broadcom BCM4360

Fritz Box 7390 uses Atheros AR9220

$ networksetup -listallhardwareports

Hardware Port: Wi-Fi

Device: en0

... snip ...