Internet issues on Monterey

Some days the issue appears every hour which it total productivity killer. Yesterday - all day working without any problem.

To other people in this thread that are struggling with this issue:

Do you notice relation between the network issue and iPhone connected to the MacBook?

I have this issue with multiple users. The only thing that seems to fix it is to change the DNS to CloudFlare (1.1.1.1 and 1.0.0.1). Not ideal for my work environment but is a bandaid till Apple fixes the issue. We notice it on 12.3 and 12.3.1 Monterey and mainly on M processor machines. It could be happening on Intel machines but we have not seen reports of it yet.

Just upgraded to 12.4 today and immediately facing the same symptoms. As a Cisco employee, I have immediately reported this issue to my local IT department and surprisingly, they were not aware of this issue, which is very strange.

The only thing that seems to mitigate the problem is to use a different DNS provider other than my own Router.

Any ideas when this will be fixed?

I am running an Intel MacBook Pro 2020.

Have you checked your connection right after flushing the cache? I'm still on 12.3 due to concerns about this issue, but I have a cron job set up to flush my cache once a minute which has resolved the issue for me most of the time. However, after a brief period, the cache becomes corrupt again and DNS queries again fail, thus the cron job...

The connection after flushing the cache seems to be ok for few minutes but comes back after a while, so indeed flushing the cache every minute would do the job as well, but I found the change of the DNS server a more easier approach.

Anyway we need a proper fix to this issue, what we are doing is just temporary remedies.

Highly recommend you contact AppleCare and open a case with engineering and provide all of the data and issues. A case number will be assigned and Apple engineers are assigned to review and look at the situation. This is the best way to get the issue queued for review or repair I have found to date

This is why I’m returning my MBP M1 no matter how many fixes I try, I’m only getting 20 Mbps on a 400 Meg connection. I can’t even download the installer to downgrade to Big Sur because the estimated time to complete is 9 days lol. Downloads are coming in at 350Kbps, back to the dial-up days I guess.

If this can be helpful - I discovered an issue with how Internet connectivity was linked resulting in big speed issues.

MBP M1Max and I use a 600Mb connection and initially I was only getting 1/4 of this speed and also thought something was wrong with the machine, etc. Today my machine is full speed and working fine. Here is what I found:

The Internet Service I use was from Comcast and it arrived on high speed Cable Modem Docsis 3.1 and Gigabit Ethernet and found that it was VERY important to ensure high quality RG6 cabling was used, only 1 splitter of the proper frequency, and the Cable Modem MUST be connected to the first link off this splitter.

Prior to doing these suggestions, I was barely getting 1/4 of the speed and both wired/wireless on the Mac were terrible. After these changes the Mac is running full performance at nearly 600Mbps all the time.

Not sure if this is your situation, but I initially thought the same thing and found out the performance was working

I also have been experiencing severe slow wifi connectivity on my iMac running Monterey. All other devices in my house (2011 MacBook Pro, 2020 iPad Mini, 2014 iPad Pro, Asus Chromebook, cellphones, Acer laptop running Linux, Samsung Roku Smart TV) are all running at top internet speeds via wifi. Getting anywhere from 50-60 mbps download/upload speeds. My iMac gets 1/2 those speeds if I am lucky. I held off on upgrading to Monterey as I had some audio production software that was not compatible initially. Once I got the green light, I went for it. Well, everything was working fine until I did so. At 1st I thought there was an issue with my router...that perhaps the transmitter wasn't working so my ISP sent me a new one. That was not the issue. I have tried every fix mentioned here and am still getting horrible internet performance on my iMac.

Has Apple even addressed this issue? Are there any plans on a bug fix with the next update? Has any Apple rep commented on this at all?

Any Apple Techs care to replay here? Or are we out in the cold? Paying thousands of $$$ for a piece of hardware/software should warrant some attention. Not one single mention from Apple about this issue.

There was a time when Apple Care actually..cared. Now the phone support is riddled with nothing more than a poorly paraded set of "solutions" that seem more like a list of "Ummm...try this then" instead of viable solutions. PRAM resets, unplug and plug back in, restart, login/logout..all "fixes" that every Mac user has more than likely tried before even contacting Apple support. Follow up ticket case #s with no follow up, When a solution isn't reached, you can expect the ever popular "Let me transfer you over to so and so" and the cycle starts over again. I used to pick up issues of PC magazine just to read about all the headaches that PC users were dealing with and being glad that I had a Mac. Now it feels as though Apple has gone the way of Windoze.

Get it together Apple.

I had been experiencing the same problem since updating to Monterey - and I do use Cisco AnyConnect. After reading all 11 pages on this thread until midnight last night, I did one last hail-mary google search - and I found a fix that has kept my connection ON ALL DAY today.

I followed the advice in the third solution on this page - which isn't exactly about the dropped internet connections, but does make references to many of the topics brought up in this thread.

https://apple.stackexchange.com/questions/420773/the-process-com-cisco-anyconnect-macos-acsockext-hogs-mac-cpu-but-cannot-be-kill

In a nutshell, the solution that worked for me:

Go into the Applications folder and open the Cisco folder.

Delete the Cisco Socket Filter application but NOT the Anyconnect client.

I have a 2019 iMac running Monterey 12.4. This problem didn't seem to start immediately after the update - maybe a week later? All of a sudden I was dropping internet connection (every few minutes). I assumed it was the access point or the modem, so I wasted a bunch of time resetting those. Then I realized every single other device was working normally. Only my computer was dropping the connection. I did all the wifi setting changes others have tried, with no luck. Rebooting in safe mode, then in normal mode, seemed to help, but only for about an hour - then back to dropping the internet connection every few minutes. Had to use my phone as a hotspot to get work done. I did notice that on Chrome I would get the DNS Error screen, followed by the No Internet screen - as described throughout this thread. If I let it sit and spin for 30-90 seconds, the connection would come back (and then drop again after a few minutes). Rinse and repeat.

I should also mention that over the past several days I've heard the fan come on inside my computer. The back was very hot to the touch. This was mentioned in the page I linked to above. Since deleting the Cisco Socket Filter application, my computer isn't getting hot any more (at least not all day today). I tested the connection to my work VM - successful. Pages have been loading in all browsers, all day.

Right now I'm praying I didn't just jinx myself by declaring this problem solved on this machine.

Solution given by jpwismer worked for me! Thank you!

Quoting:

In a nutshell, the solution that worked for me:

Go into the Applications folder and open the Cisco folder.

Delete the Cisco Socket Filter application but NOT the Anyconnect client.

I have the same on my iMac. The only way I can get any internet connect is by booting in Safe Mode. As soon as I go to Normal Mode no browser will connect. Doesn't matter if it's wi-fi or ethernet. All was working fine until this dumb upgrade. As usual, Apple abdicate their responsibilities to the user community, so I'm holding out for a hero.

TIA

I am still having this problem on 12.6. And I don't use Cisco VPN.

After a few hours the internet stops. In fact what stops is the DNS service, because opened streams (e.g. zoom) continue working. But no URL can be resolved.

Only restart is fixing the problem...

My organization is having this issue too, on all Macs running Big Sur and Monterey (12.5 and 12.6 both), although we're seeing it with TCP ports. The Mac will eventually use up and close all available ephemeral ports and not allow any more internet traffic.

Once it hits this threshhold, the only solution is to reboot the device to clear all the closed ports. By increasing the number of available ephemeral ports, you can once again get TCP traffic, until those new ports are exhausted as well. This occurs on any Mac running Big Sur / Monterey, including ones that ONLY have JAMF installed (no other applications or security tools).

We've been working on this internally for several weeks now, with no help from Apple other than to escalate us 3 times, then tell use we need to pay $700 to escalate to the needed level, (their "cross platform engineering" team).