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"Local Area Connection" doesn't have a valid IP configuration


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10 replies to this topic

#1 LongRange

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Posted 20 July 2017 - 09:24 AM

​Dell desktop running Win7 connected to fiber optic router via ethernet cable.   Error message appeared after a reboot after a power outage.  
1.  I have tried different ports and different ethernet cables in case it is a physical malfunction.
2.  Other devices are connecting to the router via WiFi with no problem.
3.  I have tried rebooting the PC and the router.
4.  Under Control Panel / Network Connections, I have three boxes:
(a) Broadband connection, Disconnected, WAN Miniport (PPPOE) (green checkmark)
(B) Local Area Connection, unidentified network, Intel ® 82567LF-2 Gigabit Network Connection
© Local Area Connection 2, Network cable unplugged, TAP-Windows Adapter V9
For (B) and ©, IPv4 properties have "Obtain DNS server address automatically"  bubbled in.
For (B) and ©, ipconfig /all screenshot shows: DHCP enabled for both
For ©, ipconfig /all shows Media State: Media disconnected

Please advise, or request additional information.



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#2 SleepyDude

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Posted 20 July 2017 - 09:37 AM

Hi,

 

I have what may sound a strange suggestion for you but it's something that solved problems several times...

Disconnect the power cord from the outlet and then press the Power Button two times for electrical discharge all the energy from the computer.

Reconnect the power cord and start the computer, check if the problem is solved.


• Please do not PM me asking for support. Post on the forums instead it will increases the chances of getting help for your problem by one of us.
• Posts in the Malware section that are not replied to within 4 days will be closed. PM me or a moderator to reactivate.
• Please post your final results, good or bad. We like to know! Thank you!

 
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#3 Wand3r3r

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Posted 20 July 2017 - 11:16 AM

sounds like the power surge blew the gigabit port on the pc.

 

BTW there is nothing in a ipconfig /all that puts you at risk by posting in a public forum.  Know where the risks are in computing or you can't protect yourself.



#4 LongRange

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Posted 20 July 2017 - 01:47 PM

sounds like the power surge blew the gigabit port on the pc.

 

BTW there is nothing in a ipconfig /all that puts you at risk by posting in a public forum.  Know where the risks are in computing or you can't protect yourself.

 

I briefly wondered about a power surge but the rig is on a battery back-up/UPS, and as the alarm went off during the power outage, I had sufficient time to close applications  and shut down.  It was when I powered up the rig the following morning that the symptoms appeared.   



#5 Wand3r3r

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Posted 20 July 2017 - 05:52 PM

Network line doesn't go thru the ups and it could have taken a hit via grounding.  This of course depends in the reason for the power outage.  Any lightening strikes?

 

Are the lights on with the nic and the port its cabled to blinking as in activity?



#6 LongRange

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Posted 21 July 2017 - 09:05 AM

Network line doesn't go thru the ups and it could have taken a hit via grounding.  This of course depends in the reason for the power outage.  Any lightening strikes?

 

Are the lights on with the nic and the port its cabled to blinking as in activity?

Affirmative.  Amber lights still illuminated and blinking. 

 

Ipconfig /all shown below:

 

Microsoft Windows [Version 6.1.7601]
Copyright © 2009 Microsoft Corporation.  All rights reserved.

C:\Users\Administator>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : -PC
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : TAP-Windows Adapter V9
   Physical Address. . . . . . . . . : 00-FF-1..............
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Intel® 82567LF-2 Gigabit Network Connec
tion
   Physical Address. . . . . . . . . : 00-24-..........
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::2df3:474e:6xxxxxxxxx(Preferred)
   Autoconfiguration IPv4 Address. . : 169.254.215.1(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.0.0
   Default Gateway . . . . . . . . . :
   DHCPv6 IAID . . . . . . . . . . . : 251667688
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-12-0B-11-3B-00-24-......-8D-2A

   DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
                                       fec0:0:0:ffff::2%1
                                       fec0:0:0:ffff::3%1
   NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{FC863413-6270-425A-B375-D9AEB0DBA09E}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
   Physical Address. . . . . . . . . : 00-00-00-00-
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

C:\Users\Administator>



#7 Wand3r3r

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Posted 22 July 2017 - 04:40 PM

The gigabit port is not getting to the routers dhcp server hence the 169 ip address

 

amber lights don't sound right.  green is the usual color if connecting at gig.  amber maybe connecting at 100mb.

 

router make and model?



#8 LongRange

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Posted 23 July 2017 - 05:56 AM

​AT&T U-Verse fiber optic - modem brand is Pace



#9 xrobwx

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Posted 23 July 2017 - 07:02 PM

Is the network set on Private or Public?


7581204627.png


#10 arlattimor

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Posted 23 July 2017 - 07:46 PM

I would reset the network connection by bringing up a command prompt and netsh winsock reset. Then reboot the system and see if it will pickup a dhcp ip address again. If the ip address changes from an apipa address then I would check that the tcp-ip protocol is functioning properly. ping 127.0.0.1 loopback address, then the routers ip address like ping 192.168.0.1 if this is the routers ip, finally making sure it can route out by pinging google.com, ping www.google.com. If you can ping the loopback address & you can ping the router, but can't ping www.google.com then it is the at&t router.


Edited by arlattimor, 23 July 2017 - 07:51 PM.

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#11 anastas87

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Posted 26 July 2017 - 12:40 AM

Hello, 

 

even though on windows 7, I had the same issue. Autoconfigured IP pointed to 169.XXXXX and there was no Internet connection, neither ethernet nor wifi. The culprit for me was an expired Avast.

Control panel -> add/remove programs -> avast -> uninstall. Look out for the "uninstall" button which is hidden at the bottom of the page (I had to move my start bar to click on it). Once it has been uninstalled, restart your computer and the issue is gone. 

 

Cannot explain this though ... Some sort of firewall from Avast?? 

 

Best regards






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