Windows 11 ethernet keeps disconnecting.

Have you tried disabling the "Allow this computer to turn off this device to save power" option?

• Go to Device Manager (Hold the 'Windows Key' and press 'x', then release and press 'm').
• Expand 'Network Adapters' and right-click your ethernet controller.
• Choose 'properties' in the context menu.
• Choose the "Power Management" tab.
• Disable the option to "Allow this computer to turn off this device to save power" and then 'Ok'.

Note: If you have a yellow triangle with an exclamation point like I did, you will need to disable then enable the device to allow it to work again for a short amount of time. When the ethernet controller isn't working properly, the "Power Management" tab will not appear in the menu after selecting 'properties'.

Also of note: If you don't like that your ethernet controller can wake your computer and you want to disable that option as well, you must first leave enabled the option to "Allow this computer to turn off this device to save power" while disabling "Allow this device to wake this computer". After hitting ok, go back into the menu to disable the first option to save power. If you were to do both at the same time, only the save power option is disabled.

I just had something similar happen to me, my ethernet connection wasn't working. My symptoms started abruptly and seemingly random. I have not made any system changes, recent updates, etc., and had used it without issue the day prior. Upon waking my computer from sleep, I had no internet, indicated by the network tray symbol and confirmed through a browser. My first thought was to look at network adapters in device manager (internet known to be working, cable plugged in). There was a yellow triangle and exclamation point next to the ethernet controller, it wasn't working. Right-clicking and going into the properties, I saw a message saying "Windows has stopped this device because it has reported problems. (Code 43)".

Disabling and re-enabling the ethernet controller would grant temporary internet connectivity, allowing me to download/install drivers/updates, but would "turn off" again shortly thereafter. Though all software and drivers were ensured up to date, the issue persisted. After searching for a while, I came across the suggestion to try that power management option. My internet has worked right for hours since. Curious, I again enabled the "Allow this computer to turn off this device to save power" option to see if it would cause a disconnection. I was again without internet less than a minute later, confirming the fix for me.

No its Just WINDOWS Edge Chrome Interfering with anyones connection if THEY Dont like who you are connected to, EVERY Chrome Update has changed Features which drives us ALL NUTS..

WE dont WANT your NEW Garbage or Features as all it does is SLOW PCs down!

Microsoft can you STOP fiddling with OUR COMPUTERS!!

No its Just WINDOWS Edge Chrome Interfering with anyones connection if THEY Dont like who you are connected to, EVERY Chrome Update has changed Features which drives us ALL NUTS..

WE dont WANT your NEW Garbage or Features as all it does is SLOW PCs down!

Microsoft can you STOP fiddling with OUR COMPUTERS!!

I must agreee on this statement here. Only if you either directly block things over regedit or remove unwanted stuff Windows slows down your PC, causing regulare drivers not working or breaking and so on because MS is thinking that they can do what they want but this is false!

WE are the Administrator from our PCs! WE decide which Software is running and which not and you MS!

And tbh. this problem appiered with the last patch so get you assess up to you computer and fix your broken system by removing at

first every spy service which clashes with the EU-DSGVO! You are not allowed to scan files or anything else which are localy on our PC.

You may be allowed but only with proper and exclusive written permissions over a signed letter that you may scan files stored in your clouds as these are OUR private files and not your files!

And because of this my important stuff is encrypted and isolated from any scanning. I should reach out to some other boards and update my hosts file to get rid of your spy services.

Oh and NOBODY wants you **** called Outlook as replacement for Windows Mail and Windows Calendar. It is OUR decision with which Software we are staying! Also I doubt that rly EVERYBODY wants your stupied AI Service Stuff! This will be directly the first one after the upcoming patch which I'll not only go and disable. I'll kick it in his butthole and force remove it from my PC since this goes way to far and is outside of what you are allowed todo.

So fix your bugs within the Services, thanks. Oh and no, no troubleshooting here is needed because it happends after installing your latest updates and it's not the first time that your updates are breaking stuff because you aren't doing any Q&A with any possible PC Setup incl. a tone of different software and hardware which you have todo and to test.

If some of my games wouldn't relay on stupied and useless AntiCheat Software I would have already switched to Linux and I suggest everybody to switch if possible.

I can only support this. I am using a program to download stuff from Instagram and after a while Windows just shuts down my ethernet connection. As soon as I close the program, it takes about half a minute and my connection is back up. I don't think, that an OS should interfere with what I am doing on my computer. Don't know exactly what causes this behaviour, but I can reproduce it and therefore it's clear, that it is in fact the OS being responsible. It's annoying to say the least.

Hello,

Thanks for reaching out! I'm Microsoft user like you.

1. Please try to Swap LAN cable and Modem\Router port of working Windows 10 to this Windows 11 PC.
2. Did you mean disconnecting = Ethernet port became disconnected or just Internet gets disconnected.
3. Please try to ping using ping www.google.com -a and keep this running for some time.
4. Disable ipv6 from Ethernet TCP/IP -> Properties

Best Regards,

Prakash