"Ethernet" doesn't have a valid IP configuration

TheAustinG · May 11, 2015

The other day I logged into my Window 8.1 PC and noticed that my ethernet connection wasn't working. I tried diagnosing it and the only error it gives me is "Ethernet doesn't have a valid IP configuration."

I've tried restarting the modem and my computer and unplugging the ethernet cable but nothing seems to work.

Any suggestions on how to fix this? Please let me know if you need anymore information.

rwinches · May 12, 2015

It usually means no DHCP assigned IP address.

Run CMD and enter 'ipconfig' at the prompt
look to see if it says media disconnected.
see if an IP address is assigned it will usually be like 192.168.0.xxx

Check all the status LEDs on the modem.
Check all the cable connections at the modem.
By restart I assume you mean you power cycled the modem and PC off/on.

Read this Tom's article:
http://www.tomshardware.com/faq/id-2079064/ethernet-doesnt-valid-configuration-notification-windows.html

TheAustinG · May 12, 2015

rwinches :

I've tried all of those and nothing worked. When I try to release my IP it tells me that there isn't one to release or something along those lines. And then when I try to renew it, it says it can't contact the DHCP server.

I logged into my modem and checked the DHCP settings but everything looks normal.
I also uninstalled my ethernet drivers and reinstalled them but that didn't help either.

Any other advice?

EDIT: When I run the Network troubleshooter, this is the report it gives me. Not sure if it's of any help or not but it's worth a shot.

Details about network adapter diagnosis:

Network adapter Ethernet driver information:

Description . . . . . . . . . . : Realtek PCIe GBE Family Controller
Manufacturer . . . . . . . . . : Realtek
Provider . . . . . . . . . . . : Microsoft
Version . . . . . . . . . . . : 8.1.510.2013
Inf File Name . . . . . . . . . : C:\Windows\INF\netrt630x64.inf
Inf File Date . . . . . . . . . : Thursday, August 22, 2013 7:01:13 AM
Section Name . . . . . . . . . : RTL8168E.ndi
Hardware ID . . . . . . . . . . : pci\ven_10ec&dev_8168&rev_06
Instance Status Flags . . . . . : 0x180200a
Device Manager Status Code . . : 0
IfType . . . . . . . . . . . . : 6
Physical Media Type . . . . . . : 14

TheAustinG · May 14, 2015

I figured it out myself. It turns out the ethernet cord has gone back. Switched the cord out and everything works fine now.

rwinches · May 15, 2015

That should have meant the LED indicator for the Ethernet connection on the router should not have been lit or next to the connector on the MB.

But maybe they were lit?

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"Ethernet" doesn't have a valid IP configuration

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