Intel MacBook Pro Wi-Fi unstable after macOS update

If this computer appears on this list of Qualifying computer for Tahoe ?

macOS Tahoe is compatible with these computers

The Wifi issue is Not Related to Compatibles between the computer and macOS 26 Tahoe

To avoid a game of 20 questions   

Download the Application Etrecheck  ( External Link ) directly from the Developer.

This is a Diagnostic Tool that makes no changes to the computer.

It makes a coherent and readable inventory of both the Hardware and Software used on the computer 

The application is free or paid for added features. 

The Report will Not Reveal Any Personal Information. 

Post back the Full Report - Share Report >> Copy , then  paste  >>>> using the Additional Text Icon  <<<<

If your Mac isn't connecting to the internet over Wi-Fi

Also check if any third party firewall you might be running.

VPN's seem to be the worst offender for internet connectivity on Mac's and iPhones and iPads.

curious_economist wrote:

Hi everyone,

Since updating my MacBook Pro to macOS&nbsp;Tahoe, my system has become noticeably slower, and I have experienced several glitches. The most persistent issue appeared after updating to&nbsp;macOS 26.2: my Wi-Fi connection now disconnects intermittently and unpredictably.

I am using an&nbsp;Intel-based MacBook Pro&nbsp;with a&nbsp;2.6 GHz 6-core Intel Core i7&nbsp;and&nbsp;16 GB of RAM• .

So far, I have tried the following without success:

Restarting both the modem/router and the MacBook

• Forgetting and re-adding the Wi-Fi network

• Renewing the DHCP lease

• Standard network troubleshooting steps recommended online

The problem persists across restarts and does not seem to be router-specific.

Has anyone with an Intel Mac experienced similar Wi-Fi issues after the macOS Tahoe or 26.2 update? Any knows how to resolve this issue?

Year? Model Identifier? is more specific...

what exactly is this mystery "Intel-based MacBook Pro with a 2.6 GHz 6-core Intel Core i7 "

Is this isolated to your home Network only...?

or all wifi connections StarBucks, University, McDonalds, City Library WiFi alternatives, seems this would be telling.

Does the User Hadware test kick out any error codes?

Use Apple Diagnostics to test your Mac - Apple Support

Hi,

I have the same problem here.

Since I updated my MacBook Pro 13 2020 (2 GHz Intel Core i5, 16 Go, 4 Thunderbolt 3 ports) with Tahoe 26.2, it is frequently disconnected from wifi network.

I performed an Apple diagnostics and I got a ADP000 code, means « no problem ».

All other devices connected to the same wifi network no suffered disconnection.

I tried to connect my Mac to my iPhone as a wifi hotspot, I got the same problem of disconnecting

Year? Model Identifier? is more specific...

what exactly is this mystery "Intel-based MacBook Pro with a 2.6 GHz 6-core Intel Core i7 "

It's the 2019 MBP