No internet on MacBook Air M1 after macOS Tahoe 26.0.1 update

nishika112 wrote:

Nothing to do with firewalls, VPN or what not. ... I know it's not a connection issue since my WIFI works fine on my ipad and the iphone.

Evidently it is a connection issue, with your Mac. Other users have reported this issue being caused by apps/extensions like LittleSnitch, antivirus software, etc., and most likely something similar is at work for you and other affected users.

As @dialabrain suggested, test by booting into Safe Mode since that disables 3rd party extensions.

Start up your Mac in safe mode - Apple Support

If the connection works properly, then something you've installed previously is not fully compatible with Tahoe. Personally, my WiFi connection from my Mac running Tahoe is perfectly stable.

My wife’s M1 Air had that problem. I fixed hers by going into the terminal and entering sudo ifconfig en0 down and then sudo ifconfig en0 up.

Does it work in Safe Mode?

Start up your Mac in safe mode - Apple Support

Exactly! After uninstalling Little Snitch v. 5x and updating to v. 6x, my powerhouse is working again! Lesson learned.

I just updated to Tahoe 26.0.1. I could connect to WiFi but no internet. Tried usual restarting etc. I noticed Little Snitch said it was incompatible and needed to update.

read posts here. So went into Settings/network/vpn & privacy and under filters & Proxies disabled Little Snitch content filter. Internet access then worked. Could then update Little Snitch and it updated its content filter. All working again.

It just needs an update to Little snitch, rather than uninstall. I disabled the little snitch content filter as I described in my earlier comment, to allow internet connection, then update

Just to add, I would try it without the Ethernet adapter connected.

After updating to macOS 26.1 this issue was fixed for me.

Facing the same problem where the connectivity via wifi goes down at random intervals. Pages will just stop loading despite the wifi being connected. Nothing to do with firewalls, VPN or what not.

Have tried resetting network settings, deleting plists. Nothing worked long enough so now I have a shortcut that disables and re-enables wifi every 30-40 mins. Really a PITA

I had the same confusing issues, but after reading this post I uninstalled Little Snitch, and my internet connection was restored.

Yesterday I have updated to Tahoe 26.01 on my Macbook Pro M1 Max, and I have the same problem. I am connected to wifi router, but no internet whatsoever. Of course my other devices connected to the router works perfectly like before, but not the newly updated mac.

I've tried to run network diagnostics (it told me to contact Apple Support, since there's no internet connection :D).

Anyone found the fix?

[Edited by Moderator]

I have the very same issue of Wi-Fi going offline randomly during the day. M2 Max MBP 16 macOS 26.0.1.

It just loses the DHCP lease, never able to recover. Restarting helps, but I am tired of doing it daily. That's just one fine Windows experience on my Mac, which is pretty unexpected.

My M2 air has the same issue, wifi disconnects automatically every 10 minutes or so.

Here you go friends:

Check out this video from this search,

https://share.google/fM76wHjIZiYp2tNtF

this fixed it for me!