macOS Sequoia network issues

Yes, this is a widely reported bug in Sequoia (just google intermittent internet connection Sequoia). As stated turning off the firewall usually works, it did on my 2019 imac and 2023 mac studio. This appears to be the only workaround until Apple fixes the network bug(s). The real question is, of course, 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?

Dear all ;

The problem solved by turning off (Limit IP address tracking) in network settings,(for both Wi-Fi and Wired connection) .

There is no need to uninstall or change any other settings or software.

Thanks

Do you have the firewall turned on? Turning that off seems to help immensely.

If you are having connection issues with application XYZ, try the following steps:

1) Open a Terminal command window.

2) In order to see whether your OS firewall allows or blocks connection from application XYZ, enter the following command from the Terminal command window:

/usr/libexec/ApplicationFirewall/socketfilterfw --listapps

3) If the output from that command lists application XYZ as blocked by your OS firewall, you can allow application XYZ firewall access by entering the following command from the Terminal command window:

/usr/libexec/ApplicationFirewall/socketfilterfw --add /Applications/XYZ.app

( where XYZ.app is the name of the given application as listed in the /Applications folder, including case sensitive )

Seems like I have found workaround:

I'm using wire connection instead of WIFI. Or just try another WIFI network.

, 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?

Perhaps they are hoping to encourage the last few holdouts to leave it off like it should be set.

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?

Drakemm wrote:

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?

Firewall is one thing. The next thing is also firewall, or rather, any other kind of 3rd party "privacy" or "security" app that hacks around with network internals.

Also check System Settings > Network > WiFi > Private WiFi address and make sure it is set to "fixed".

That is, how do I get back to OS Sonoma?

That's a different question altogether. Create a bootable USB installer. Boot to recovery. Erase the hard drive. Reinstall Sonoma, restore from backup created before installing Sequoia.

Is this a bug? Why would they release an update with such a major bug? Think how many people went to update Homebrew and are banging their heads against the wall? I really can-not believe they are this incompetent.

Hope_I_Am_helpful wrote:

Is this a bug?

It's either a bug or a design feature.

Why would they release an update with such a major bug?

Maybe they meant to do that.

Think how many people went to update Homebrew and are banging their heads against the wall?

Makes me smile. 😄

I really can-not believe they are this incompetent.

Me neither. 😈

Hi,

Same issues seen here after upgrading to MacOS 15, this is a mess!! It is very frequent that I can't open websites at the first try with Chrome, and I do run Zwift for my cycling workouts, and keeps dropping the connection every 1-2 mins, my teammates says that my avatar just disappears.

I have tried to:

-Re-add the Wifi adapter

-enable/disable Bluethoot, Location services

-Reinstall apps

-Change wifi settings to fix ip or alternate.

My next step will be to perform a reinstallation of the whole OS from scratch and see if that works.

Again, this issue started after upgrading my Mac to Sequoia, it is a Macbook Pro 16 inch M1, before that update it was working perfectly fine for 2 years now, how is this possible? Apple should test the Operating Systems before publishing them to the customers, this is a mess.

[Edited by Moderator]

In my case, uninstalling the third party Sophos Endpoint Protection software seems to have resolved constant disconnections of my Citrix Workspace sessions and other strange networking issues I've been experiencing since OSX updated on Monday.

I use a cabled ethernet connection with a static internal IP address so Wifi random IP address wasn't the problem. Also the OSX firewall was - and still is - enabled.

Will be testing re-installing the SEP software later today, to see if it interacts with the OS in a more stable manner after going through a full install process onto the new OS version.

Starbreeze wrote:

Yes, the firewall is enabled and is set by a configuration profile.

That will do it. You'll have to contact your IT admins and let them know it isn't working. Maybe suggest that they consider AppleSeed for IT next year. Then they would be better prepared.

thx starbreeze. your hint with "fixed" helped a lot.