iMac cannot connect to internet after Sequoia Update

I have a Mac and installed Sequoia 15 yesterday. My Sequoia OS will not connect to internet. Two browsers and other apps say no internet connection, even though System Settings say I am connected. There is nothing wrong with my WiFi, since I can print from Sequoia using WiFi, and my Windows virtual machine under Parallels can do everything (print, browse, etc.). I rebooted numerous times, tried turning WiFi on and off, deleted the WiFi network and re-added, tried iphone hotspot and ethernet, deleted the network services and readded them, trashed Eset and disabled Apple Firewall. I also tried reinstalling Sequoia. Please help!


[Re-Titled by Moderator]

iMac 27″, macOS 14.6

Posted on Sep 17, 2024 1:10 PM

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Posted on Sep 17, 2024 2:55 PM

I am now connected! I had thrown ESET in the trash and disabled ESET filters. Someone posted that they had to delete the ESET filters from System-Network-Filters, but I didn't know how. I had Apple Support call. ESET was in trash, so she had me empty trash. From System-Network-Filters, she instructed me to highlight an ESET filter and use the minus key "-" to delete the filter and then do same for the second ESET filter. Yay! Thank you everyone!

84 replies

Sep 24, 2024 12:00 PM in response to barbdgr

Same problem here. But I don’t have any ESET installed neither Little snitch.

yesterday I was able to get my WiFi connection work… but today it’s dead again.


i have tried to use terminal and check what is blocking incoming connections and it’s says com.apple.controlcenter.


have no idea how to fix it.



by the way! My telegram and WhatsApp are working on laptop and I can still chat and upload images/audio/video/make calla

Oct 1, 2024 7:30 AM in response to barbdgr

I'm also facing this issue. Issue doesn't happen only at the start. Unfortunately, my mac would disconnect randomly, while I'm working. To recover my wifi connectivity, I'm required to restart my mac. My mac is always very close to and infront of my wifi router. While my mac is having issues connecting to wifi, my iphone connectivity remains stable and works well.

Dec 14, 2024 8:58 AM in response to vaidhruth

Okay, good info. What is "Little Snitch?" What is ESET? How do I find them? How do I delete them? I upgraded to Sequoia, first wifi disappeared and two weeks later ethernet connectivity disappeared (even though NW status says ethernet connected).


So maybe the folks giving this guidance are more technical than me but how does Apple let this problem persist when it seems so common???


I am now in the position of having to consider an OS download (which might now even be do-able) as my Mac is not of much use to me w/o connectivity.

Feb 12, 2025 11:31 AM in response to barbdgr

I’ve spent a couple of days setting up a new iMac which is running Sequoia 15.3.1


Having thought I’d sorted everything I hit a snag going online.


I’ve spent some time with Apple support today trying to resolve this issue - without success.


I’ve reinstalled the OS 15.3.1 - but no change.


My 2023 MacBook Pro running Sequoia 15.1.1 is running side by side an is ok - i'm not going to update the OS!


I’m connected to my main router and my iPhone is available as a Personal Hotspot and I can connect to the iPhone .


The ’new’ iMac won’t connect to the same (main) router as my Powerbook Pro - I get a 'Cannot connect' message


The iPhone Personal Hotspot doesn’t even show in the iMac’s wifi system settings.


I’ve run a wifi scanner on the iMac and the iPhone doesn’t show on that either.



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iMac cannot connect to internet after Sequoia Update

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