macOS Sequoia network issues

Like many others, Sequoia started behaving very sluggish from the very beginning. The computer itself was slow, but I also had trouble accessing the company's Microsoft 365 environment. I couldn't access SharePoint, OneDrive repeatedly asked me to log in, DNS resolution frequently didn't work, Teams refused to allow me to join meetings, the browser versions of Office, Excel etc didn't work, etc.


First thing was to uninstall the VPN software I sometimes have to use to connect to the office network from home. I'll wait for the vendor to release an update.


While at the office, my MacBook Pro is connected to both WiFi and cabled Ethernet. Once I unplugged the cable, things started behaving better - that's clearly a bug, and it has always worked just fine in older versions of macOS.


Setting Private Wi-Fi address to "fixed" helped with the frequent network disconnects. I've now set it to "off" (because I rarely use public Wi-Fi networks).


Things are now mostly back to normal. I hope this helps others struggling with similar issues.

MacBook Pro 15″, macOS 15.0

Posted on Sep 19, 2024 2:07 PM

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Question marked as Top-ranking reply

Posted on Oct 29, 2024 4:05 AM

Problem Solved! - And an alternative Solution for Network Issues on Macs with Sequoia 15.0.1 (Intel Chip)


Hey everyone,


I wanted to share a workaround and the latest update on an issue we ran into recently with some Macs at our company. We have around 15 Macs, and they were all working fine until a few days ago, when we started seeing frequent, frustrating network issues:

  • Random disconnections from our internal software
  • Email failures
  • DNS resolution issues (resulting in no internet connection)


Here’s what I found:

After looking closely at the differences between the Macs having issues and those that weren’t, I realized the problem only affected iMacs that were:

  • Updated to Sequoia 15.0.1
  • Running on Intel chips

Meanwhile, iMacs running Sequoia on M1 or M2 chips or those on Sonoma (Intel, M1, or M2) were working perfectly.


Troubleshooting Steps Tried (Spoiler: Didn’t Work)

I tried everything I could think of: replacing cables, configuring devices with DHCP, setting Fixed IPs, assigning IPs based on MAC addresses, adding IPs and DNS into our firewall, disabling firewalls and VPNs, and fiddling with advanced Ethernet settings. Nothing seemed to work.


Temporary Fix (Before the final solution)

While troubleshooting, I managed to identify a way to reproduce the issue: simply rebooting an affected iMac. After a reboot, it wouldn’t immediately connect due to (what I think it is)a bug in the “mDNSResponder” process, which affected auto-discovery and server detection.


To work around this, I wrote a script to:

  1. Detect the active Ethernet interface
  2. Shut it down temporarily, then turn it back on after 10 seconds.


#!/bin/bash

# List all active network interfaces
for interface in $(networksetup -listallhardwareports | awk '/Device:/{print $2}')
do
  # Get IP address assigned to the interface
  ip=$(ifconfig $interface | awk '/inet /{print $2}')

  # If IP address is assigned, print the interface and the IP
  if [ -n "$ip" ]; then
    echo "Ethernet Interface: $interface"
    echo "IP Address: $ip"
    # Turn off the interface
	sudo ifconfig $interface down
    # Wait for 10 seconds
	sleep 10
    # Turn the interface back on
	sudo ifconfig $interface up   
  fi
done


Running this script daily helped keep our iMacs connected – not a pretty solution, but it worked.


The Real Fix (Finally!)

Yesterday, I noticed that Apple released Sequoia 15.1. I updated one of the affected iMacs last night, and today it’s been working perfectly. After several reboots, the problem hasn’t resurfaced, which looks promising!

I’ll be updating the rest of our affected iMacs at the earliest opportunity and will report back if there are any hiccups.

Hope this helps! If this solution worked for you or you found this useful, please upvote so others can find it easily.


Thanks!

Junior.

102 replies

Sep 26, 2024 7:31 PM in response to pest1

pest1 wrote:

why did Apple release an operating system update where many Mac owners have to to turn off the built-in firewall to get a stable internet connection?

Apple releases a new operating system every year. People line up with their download buttons like the biggest Black Friday sale ever held. They will even download special software to hack up their system just so they can run the operating system on unsupported hardware.


There is no number or severity of Apple bugs that could possibly stop this addiction to updates.


And Sequoia has been one of the most trouble free releases in recent years.

Sep 29, 2024 1:42 AM in response to etresoft

I have a problem with the ethernet connection. I send photos from Nikon Z8 camera to Macbook pro 14 M3 via LAN cable and ethernet adapter. After upgrading my system from Sonoma to Sequoia, my connection stopped working. "Connecting to computer" is constantly on the camera screen and nothing else. I tried turning off the firewall - it didn't help, reinstalling the utility from Nikon - it didn't help.

I set up a new LAN connection from the beginning with camera management in the utility - it didn't help. Can you please advise me of something I might have overlooked? That is, how do I get back to OS Sonoma?

Sep 30, 2024 5:29 AM in response to etresoft

I looked at the wifi site and it says "fixed". It's just that I don't have any previous Sonoma OS backup. I don't know if it's really so, but today I was told by the helpline that on Macbooks with an Apple silicon chip, you can't return the old operating system for a new one. What is your experience?

My configuration is a MacBook Pro 14 M3

Oct 16, 2024 8:56 AM in response to Starbreeze

After updating to macOS 15.0.1, I started having problems with connections, to be specific with Apple Remote Desktop. I also tried using other apps like VNC Viewer but I still have the same issues with the remote session where connection dropping every few minutes. I try everything but only what works seems to be turning the Firewall off. I turned off the firewall and didn't get a session disconnection for a while.


Unfortunately Apple has become worse than Microsoft with updates. The previous version (macOS 14) had a problem with HDMI connections on M2 chips and still hasn't been fixed. This is totally unfair because Apple devices are too expensive to have issues like this!

Oct 24, 2024 4:15 AM in response to Starbreeze

OK, I've had enough of the drop outs. As a I posted, the only thing that seems to work, but not always now, is toggling WiFi off and on. I was doing something important on my Mac today and the internet dropped out again. After spending 10 minutes trying to get the internet working again, I had to start my work over. This is a very poor showing from Apple - is there a fix rumoured to be coming soon?

Oct 27, 2024 5:03 PM in response to Bill Walker2

After pressing post on the above I closed the computer used to log on the server vis VPN and went to bed. Next day (27th) the problem has returned. Server Terminal app was left open on the server and when logging I found these strange lines on the terminal screen that appears to have been created by about 1 minute (26th) after I made the above post and close VPN connection.


=> Successfully stopped `httpd` (label: homebrew.mxcl.httpd)

==> Successfully started `httpd` (label: homebrew.mxcl.httpd)

lowerlevel@70-89-220-117-clean-air-engineering-il ~ % 

 [Restored Oct 27, 2024 at 5:48:45 PM]

Last login: Sun Oct 27 17:48:45 on ttys000

You have new mail.

lowerlevel@70-89-220-117-clean-air-engineering-il ~ % >....                                          

2024-10-26 22:48:41.548060 <Notice>: Last log repeated 1 times

2024-10-26 22:48:41.547173 (gui/501 [100003]) <Warning>: denied lookup: name = com.apple.contactsd.persistence, requestor = searchpartyuser[19692], error = 159: Sandbox restriction

2024-10-26 22:48:42.000201 <Notice>: Last log repeated 1 times

2024-10-26 22:48:42.000151 (system/com.openssh.sshd.6A33D7FA-D690-4228-9D58-38BB7C55BD07) <Notice>: internal event: WILL_SPAWN, code = 0

2024-10-26 22:48:42.000184 (system/com.openssh.sshd.6A33D7FA-D690-4228-9D58-38BB7C55BD07) <Notice>: service state: spawn scheduled

2024-10-26 22:48:42.000189 (system/com.openssh.sshd.6A33D7FA-D690-4228-9D58-38BB7C55BD07) <Notice>: service state: spawning

2024-10-26 22:48:42.000272 (system/com.openssh.sshd.6A33D7FA-D690-4228-9D58-38BB7C55BD07) <Notice>: launching: ipc (socket)

2024-10-26 22:48:42.001722 (system/com.openssh.sshd.6A33D7FA-D690-4228-9D58-38BB7C55BD07 [93499]) <Notice>: xpcproxy spawned with pid 93499

2024-10-26 22:48:42.001762 (system/com.openssh.sshd.6A33D7FA-D690-4228-9D58-38BB7C55BD07 [93499]) <Notice>: internal event: SPAWNED, code = 0

2024-10-26 22:48:42.001769 (system/com.openssh.sshd.6A33D7FA-D690-4228-9D58-38BB7C55BD07 [93499]) <Notice>: service state: xpcproxy

2024-10-26 22:48:42.001794 (system/com.openssh.sshd.6A33D7FA-D690-4228-9D58-38BB7C55BD07 [93499]) <Notice>: internal event: SOURCE_ATTACH, code = 0

2024-10-26 22:48:42.013150 (system/com.openssh.sshd.6A33D7FA-D690-4228-9D58-38BB7C55BD07 [93499]) <Notice>: service state: running

2024-10-26 22:48:42.013172 (system/com.openssh.sshd.6A33D7FA-D690-4228-9D58-38BB7C55BD07 [93499]) <Notice>: internal event: INIT, code = 0

2024-10-26 22:48:42.013207 (system/com.openssh.sshd.6A33D7FA-D690-4228-9D58-38BB7C55BD07 [93499]) <Notice>: Successfully spawned sshd-keygen-wrapper[93499] because ipc (socket)

2024-10-26 22:48:42.017663 (pid/93499 [sshd-keygen-wra]) <Notice>: uncorking exec source upfront

2024-10-26 22:48:42.017685 (pid/93499 [sshd-keygen-wra]) <Notice>: created

2024-10-26 22:48:42.021595 (pid/93499 [sshd-keygen-wra]) <Notice>: domain exec event

2024-10-26 22:48:42.021606 (pid/93499 [sshd-keygen-wra]) <Notice>: shutting down

2024-10-26 22:48:42.021616 (pid/93499 [sshd-keygen-wra]) <Notice>: cleaning up

2024-10-26 22:48:42.021623 (system) <Notice>: removing child:


Note that the Server Firewall has been on for months. The server is owned by a corporation and has 3rd party protection software installe and related user named Ntiva which is an admin User.

I will check with corporate IT tomorrow to see if Ntiva has messed with the server.

Oct 29, 2024 5:09 AM in response to Starbreeze

This problem is still with my M1 MacMini (LAN cable to modem). There doesn't seem to be a pattern except that at start-up the internet will work, then stop a little time after that (but not always). Then, I switch on WiFi (it works, most times) and then switch off WiFi and go back to LAN only. Sometimes this doesn't work, and I need to restart and that works...half the time. It just crashed again while I was typing this (fortunately, I copied what I had typed and pasted it in) - I had to switch on WiFi again to get internet access. Had. Enough.

Oct 29, 2024 11:54 AM in response to Bill Walker2

Turns out that this server is the only computer in the building that does not have Ntiva installed. So that was not an issue.


However, server now stays on for random length of time. Rebooted yesterday morning and it stayed on until 4 AM today. Had to reboot twice today, getting about 2 hours on a boot.


I used set it up to reboot every day of the week at midnightusing:

sudo pmset repeat restart MTWRFSU 00:00:00


Now looking for a way I can have our remote webpage monitoring service send a message that can be used to trigger a reboot.

Nov 4, 2024 7:59 PM in response to Starbreeze

I didn't have problems with my wi-fi randomly disconnecting until I updated 15.01 to 15.1. My wi-fi connection drops at least 6 times a day; my primary network will not auto-connect, I have to select it. I updated my wife's MacBook Air from macOS 14 Sonoma to macOS 15.1 Sequoia and boy is she really mad at me for updating her computer since she is having the same wi-fi issue. There is absolutely no problem with my network as I use YouTube TV and it is on the same network as our laptops.

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macOS Sequoia network issues

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