Windows 10: PC ethernet connection repeatedly cutting out after new windows security update

Once the below update was installed my ethernet connection keeps cutting out about every 15 seconds then reconnecting.Security Intelligence Update for Microsoft Defender Antivirus - KB2267602 Version 1.421.573.0This is the only new update on my device. My network adapter is a tp-link 10GB TX401. Shows up in device manager as Marvell AQtion 10Gbit Network Adapter.My ethernet connection was fine before this update. When open command prompt and run ping 8.8.8.8 -tr I get request time out every 15 or so seconds then it reconnects right after. WiFi has no issue with steady connection. The same pr

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New Windows 11 Professional PC not recognized by router with wired ethernet connection?

Hi

Welcome to Microsoft community.

It sounds like you've already taken a thorough approach to troubleshooting the issue. Since you've ruled out many common factors, I'll provide a few more steps you can try to diagnose and potentially resolve the problem of your new Windows 11 Professional PC not being recognized by your router with a wired Ethernet connection:

1. Driver Update and Reinstallation:
   
   • While you mentioned that you installed the Realtek Ethernet driver, it's worth double-checking if there are any updated drivers available from the motherboard manufacturer's website. Sometimes, motherboard-specific drivers can help ensure compatibility.
     
2. Static IP Configuration:
   
   • Try assigning a static IP address to your Windows 11 PC. This can sometimes help in situations where automatic IP assignment is causing issues. Configure the static IP within the Windows network settings and ensure it's within the same subnet as your router.
     
3. Network Reset:
   
   • Open the Windows 11 "Settings" app.
     
   • Go to "Network & internet" > "Status."
     
   • Scroll down and click on "Network reset."
     
   • Follow the prompts to reset your network settings. This will remove and reinstall all network adapters and reset your network settings to their default.
     
4. Driver Uninstallation and Clean Install:
   
   • Uninstall the Realtek Ethernet driver completely.
     
   • Reboot your computer.
     
   • Install the latest driver you downloaded from Realtek or your motherboard manufacturer's website.
     
5. Network Troubleshooter:
   
   • Run the built-in Network Troubleshooter in Windows 11:
     
     1. Right-click on the network icon in the system tray.
        
     2. Select "Troubleshoot problems."
        
     3. Follow the prompts to let Windows attempt to diagnose and fix network issues.
        
6. Consider Another Network Adapter:
   
   • If the issue persists, you might consider getting a separate Ethernet PCIe adapter (a different brand) and installing it in your PC. This can help determine if the issue is specifically related to the Realtek adapter.
     
7. Try a Different Router or Connection:
   
   • If possible, try connecting your PC to a different router or network to see if the issue persists. This can help narrow down whether the problem is related to the PC or the network.
     

Remember that network-related issues can be complex, and the solution might require a combination of steps.

Please feel free to let me know if you have any further updates, thanks.

Best regards

Derrick Qian | Microsoft Community Support Specialist

 

Windows 10 Ethernet connection randomly disconnects

Hello,

So this issue has been annoying me since i have changed my old i5-4670 with a ryzen.

Ethernet: Realtek 8111H (MSI X370 Gaming Plus)
Modem/Router: Airties Air 5760

What i have tried so far to fix my issue:

• Re-installing Windows
• Updating Ryzen chipset drivers
• Updating Realtek LAN drivers (both from MSI & Realtek)
• Updating MSI' LAN releated drivers (MSI Gaming Lan Manager)
• Replacing ethernet cable
• Restarting router to factory settings

Still no luck, keeps happening randomly. Sometimes it is stable for days then it is not stable for 20 mins. Happening when gaming or idle, or while streaming via steam link.
Windows' own issue fixer thingy fix the issue for the moment, re-plugging the cable, disabling & enabling the ethernet adapter also fixes the issue for the moment.
Also i am the only one having this issue in the network, TV and phones are still connected to wifi.

It is started to be real annoying, so time to get help to fix the issue from TPU. Thanks in advance! *I Love TPU :lovetpu:

 

Ethernet Connection

Hi,



Thank you for posting your query on Microsoft Community.



We would like to ask additional information that will help us in resolving the issue.

• What kind of computer are you using? Is it a desktop or a laptop?
• Did you make any recent changes to your computer?
• Have you tried troubleshooting the issue by yourself? If yes, what were the steps you have taken so far?

I would suggest you to try the following and check:

• Verify that the cable connects the modem to the wall jack is connected securely.
• Verify that the cable connects the computer to the modem is attached securely at both ends.
• Restart the router/modem.

Follow the steps and let us know if it helps.