Dropping Ethernet Connection on Big Sur on Mac, Mac Mini, iMac

Last Updated on Apr 10, 2021

Some mac users recently shared the issue with us, and They are disconnecting the internet connection when the ethernet connection is in use. Sometimes it looks like Either hardware or MacOS Software version issues, we have fixes for the issue that happens because of a software glitch, and the RJ45 Ethernet port is damaged, and how it’s making is re-usable without spending more.

we are happy to help you, submit this Form, if your solution is not covered in this article.

The ethernet connection is more speedy than the wireless connection, but still, we have an alternate option as well, WiFi. Here’s a solution for WiFi not working on Mac. Follow this article. until that, let’s fix the Dropping Ethernet Connection on Mac Models (Intel or M1 iMac, Intel or M1 Mac Mini, MacBook Pro, MacBook Air – Supported Ethernet Connection)

Tricks to fix Dropping Ethernet Connection Automatically on Mac

1: Plug out Ethernet Cable and Plugin

In most cases, remove RJ45 Connector from Mac and Plugged in again to fix the issue for all time. Press down the Small clip to unlock and remove the cable from Ethernet Port.


So, there are too many reasons behind that. Diagnose ethernet cable first.

As a time to go, Your Crimping might be loose, or your Ethernet cable damage from somewhere. or Do Re-Crimping the new RJ45 Connector.

I highly recommend the above suggestion on your RJ45 Dropping internet connection. If so, the internet is Work again after doing Re-Plugin.

If you know that, then use the Spare RJ45 Cable that comes with a new Router. Or Buy a new RJ45 Cable.

2: Create a New User Account or Ethernet Profile

Create a new User Account to fix the issues related to a corrupted file system, and I recommend creating a new administrator account from mac System Preference.

  • Create a New Administrator Account: Click on the Apple logo from the Top Mac menu > System Preferences > Users & Groups > Unlock the lock with your Mac login password > Click on Plus sign to add a new account > Select Administrator in the New Account dropdown menu. and fill in the other details. Now login into the newly created account and check the Ethernet is working or not. Still now working then, create a new Ethernet profile and check.create-a-new-user-on-mac
  • Create a New Ethernet Profile for the internet, Apple logo > System Preferences > Network > Tap on Plus (+) > Select Ethernet interface > Create. Delete the old Ethernet preference by selecting it and Tap on the Minus sign (-). That’s it.create-a-new-ethernet-on-mac
  • Also, Apply Some Changes in Power saver settings on Mac: Go to the Apple Logo from the Top Mac menu > System Preferences > Energy Saver > And Setup the below settings.

3: Try in Safe Mode

Apple is also recommending the Safe mode, and Safe mode can help you determine whether an issue is being caused by software that loads when your Mac starts up.

The core macOS Functionality that may cause the issues like this, follow the below steps for Safe mode on intel and M1 Mac.

  • Safe mode on M1 Mac: Shut down your Mac, Press and Hold the Power button for 10 seconds as mac starts up. Release the Power button once you see the startup screen on Mac. and Select the Startup disk.
  • stratup-disk-on-mac-for-safe-mode

Press and hold the Shift key and click Continue in safe mode. Release the Shift key and log in to your Mac.


  • Safe mode on Intel Mac: Restart your Mac and Quickly press and hold the shift key, Until you see the login window screen. You will see Safe mode at the top right corner of the screen. That’s it.

Still have an issue with the Ethernet internet not working then. There is no software issue.

Note: Keep your MacOS Updated, Apple Logo > System Preferences > Software Update > Download and install New Software if you found.

4: Apple Support

If your Mac is under warranty, then contact apple and Book Genius bar appointment online. Apple will help from scratch. And Gree Hardware repair or Replacement for under warranty MacBook model.

Check if your Mac Warranty Online; here’s a tutorial.

Suppose your Mac is out of warranty or can’t wait to reach a nearby apple store then here’s an alternate way to fix the Ethernet port hardware issue.

5: Hardware Fix: USB Ethernet Adapter

Now, For USB 3 and USB C port Mac computer and Macbook, use these multifunctional USB Ethernet Adapter to connect your System via Ethernet cable. Just Plug in & use this adapter to save your Time and Dollars as well.

USB 3.0 Ethernet USB Adapter: Buy Now


Universal RJ45 Ethernet Adapter for all Mac [USB 3, USB C] & Computer with All macOS & Windows OC: Buy Now


Stay updated with more helpful solutions and tips on COnnectivity issues on Mac. Comment me to get more help asps.

Jaysukh Patel is the founder of howtoisolve. Also self Professional Developer, Techno lover mainly for iPhone, iPad, iPod Touch and iOS, Jaysukh is one of responsible person in his family. Contact On: [email protected] [OR] [email protected]

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