Windows 10: Ethernet connections lost after Windows updates

Today I ran Windows Update on two of my PCs: a DELL Win10 and a HP Win8.1. When updates were finished and the two PCs restarted, Windows reported "Unidentified Network No internet access". Both PCs are connected to my router via CAT5 ethernet cables. On each PC, I ran the Windows Network Diagnostics. In both cases, the Diagnostic reported "...unable to automatically fix all of the issues" and " 'Ethernet' does not have a valid configuration NOT FIXED"


All other devices connected to my router are working fine. Another Windows laptop, that was NOT updated, still has connectivity via its ethernet CAT5 connection; I can log into my router's utility @ 192.168.1.1 and see that all is well, except that the two updated PCs are no longer in the connected devices list. Also, the internet is accessible on that PC that was NOT updated, so this is not an ISP issue.


Both troubled PCs had working ethernet connections just before running Windows Update. After updating, neither does.


Also, yet another PC, an ethernet-connected Apple Mac, has fully functional networking.


I believe that the network failures on the two updated Windows PCs are directly attributed to the latest updates I just installed.


How to I get my ethernet connections working again on the updated PCs? And just to be clear, this is NOT A WIFI ISSUE.

:)

 

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:

 

Windows 10 Ethernet connection randomly disconnects

I suggest checking out the event log in Windows. It's likely going to tell you why (to some degree,) why the network connection was lost. I haven't had this issue with wired connections but, with wireless it has almost always come down to drivers or a strange software bug which boiled down to how the driver operates.

 

Windows 10 Ethernet connection randomly disconnects

Drivers and certain antivirus software or vpn related stuff.