26.2 update broke all network-connections

An endemic issue with macOS 26.2 would usually have reports in the forums and some big 🤬 threads, so probably something local.

If you are running Samba, make certain your servers are not running Samba 4.22.

Either older, or 4.23.4 or later, 4.22.6 or later, if I read the release notes correctly.

(Based on another thread not yet fully resolved…) Do you (not) have two-factor authentication enabled?

Mine ended up being a DNS issue with a custom DNS I had set to my wifi interface.

I've got the same issue. Other devices on my network work fine and my machine took the update over the weekend.

Did you find a solution?

lmcurley wrote:

Same here, I’ve a UniFi setup with AP and all other devices connecting fine my by MacBook Pro 2020 Intel won’t connect via WiFi anymore since the 26.2 update.

Check over at the UniFi forums, too. Maybe this?

https://community.ui.com/questions/macOS-Tahoe-26-0-Wi-Fi-unusable-drops-constantly-to-169-254-x-x-Link-Local-address/b612452b-0085-4ad1-ba4d-9280213ab1d0?reply=2

Same Here stuck in issue with wifi and waiting for next security update

@apple may fix it asap

Same here, I’ve a UniFi setup with AP and all other devices connecting fine my by MacBook Pro 2020 Intel won’t connect via WiFi anymore since the 26.2 update.

How update iPhone

tats224 wrote:

How update iPhone

Here is how to update iPhone: Update iOS on iPhone - Apple Support

The current iOS 26 requires an iPhone 11 or later, or iPhone SE 2nd gen or later, or iPhone Air.