Internet issues on Monterey

This is definitely a problem. I had Lanscan installed. Today (5 times) I scanned the network. After listing the devices, the beachball appeared. Lanscan could not be force-quit. At this point the network was lost - connected servers dropped, web browsing dead. Could not reboot - had to force a hard shutdown.

After removing Lanscan, I resumed an online course. 6 times during a 2 hour period, the ethernet vanished. Again, local servers dropped, no browsing, no ping. Had to reboot to recover operation.

I never had this problem before the latest Monterey 12.3.1 update.

Apple has definitely broken something and it's making the machine almost unusable.

If it was a real computer, and not an appliance, I would just load up Fedora and be done with this nonsense but, as it is, I'm stuck with it. It's a MBP 2016 and it's pretty obvious why it is worth so little in trade on a newer model. Who would want something as afflicted as this.

It cam with Mojave but things reached a point where an upgrade was unavoidable. There is no way to revert to Mojave. They have done something to the Mojave installer that prevents it from running now - just says the installer app is damaged (or something like that).

Since this thread has been running for a long time how, and it's pretty clear that many are experiencing similar problems, the only constant factor is the fact that Mac Monterey is behind it all. It seems almost certain that it is the culprit.

I won't bother calling Apple Care (but that's another story for a different time)

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 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

Recommended settings for Wi-Fi routers and access points

The issue with the runaway number of sockets was fixed in macOS 12.2. Issues with DNS resolutions past that version are caused by other factors.

After the return, there are nice nacbooks at owc that will run mojave (like my mbp 2016. After a total Monterey melt down I wipe the nachine and restored an old Mojave clone. No network issues now.

Sorry you are having this problem. You might want to be more specific as to what happens. What messages you are getting, etc. I am guessing that the problem is not Monterey. I suggest checking other things before drawing any conclusions. I would begin by restarting the browser and see what happens.

I have the exact same issue ever since I have upgraded my 2017 MBP to macOS Monterey

I have also tried everything described

I can also report that only rebooting the MAC or rebooting the Router will work to resolve. so thing suggests something related to dns negotiations or handshaking between MAC & Router.

Very annoying !!!

In my case, I also noticed that after some period of time the problem may reoccur and I had to repeat the workaround. I'm guessing that my employer's remote management policy periodically does a check and re-activates the socket filter, so I had to go back into Network Preferences again to disable it. Seems to occur far less frequently now than before and at least it's preferable to the only other workaround I was aware of, which was a full reboot.

I had connection issues since day 1. Doesn’t matter if I’m using home Wi-Fi or make iPhone hotspot. No matter what browser either. Sometimes just nothing helps so I use my PC.

Sometimes everything works just fine. It’s really weird. Have to shut down vpn for sure too.

Alas, I upgraded to 12.2 last night because I was having the failing DNS issue and the skyrocketing number of open sockets. Now, the sockets are stable and in the low hundreds, but I just had to reboot my computer because I couldn't get DNS working.

For reference, I do use Cisco AnyConnect. But I didn't see any issues with that after the upgrade.

We'll see if this was just a one-off issue, or I keep running into DNS issues on 12.2.

Not as bad as you, but yeah, I'm having the same issue ever since I upgraded to Monterey. I think I'm getting once or twice every day. Sometimes it comes back after 10-20 minutes.. but restarting the computer fixes right away.

I know this is not a router issue because I experienced this from multiple places. This is super annoying.

Hi, I have 3 Macs running Monterey, iMac and MacMini no problems.

My iMac is a 2013 running OCLP Monterey with updates, no problems!!

My MacBook Pro late 2015 with a clean install from Apple has peculiar problems with WiFi.

Sometimes when I boot up it refuses to connect, also when waking from sleep (lid closed)

Same MBP booting to Catalina or Bootcamp no wifi issues, DRIVING me a little crazy!!

Am about to install Big Sur in another volume and see if that does it!!

Fingers crossed for a result.

I'm having the exact same problem on my IMac after updating to Monterey and I'm beyond frustrated. I've tried all the suggested fixes with no success. This is clearly a software issues and not an issue with my network. All my other devices, including my Mac Book (which i have not updated to Monterey) have no problem connecting and staying connected. This has destroyed the functionality of my desktop. I regret updating and will not update my laptop to Monterey as a result.