Solved "Unidentified network" - No internet access (LAN)

[HelloThere]

Hello there!

I'm sorry this has been posted numerous times before, but I've read through everything, but haven't yet found a fix. The problem is I get the "Unidentified network" message when I try to connect to the internet via LAN. I just built a new PC, and started getting this error. I've never used LAN before, and the same issue occurs when I try it on my laptop. Wi-Fi works fine, though.

I've tried the following:
* Uninstalling, reinstalling network adapter driver
* "netsh winsock reset", "netsh int ip reset resetlog.txt", "ipconfig /flushdns"
* Reverting machine settings to before the first Windows update
* Disabling IPv6
* Changing LAN cable
* Connecting to another PC
* Changing "Speed and duplex" settings
* Turning off firewall (no anti-virus installed)
* Reseting and restarting router, as well as trying other ports
Edit:
* Reseting DHCP and DNS client (both set at automatic startup)

Ipconfig:

Windows IP Configuration

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


Ethernet adapter Local Area Connection:


Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet
Physical Address. . . . . . . . . : BC-5F-F4-2B-4A-59
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::f41e:86d3:c613:654e%12(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.101.78(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 213671924
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-17-AA-F3-61-BC-5F-F4-2B-4A-59


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


Ethernet adapter Local Area Connection 2:


Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet #2


Physical Address. . . . . . . . . : BC-5F-F4-49-B0-60
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes


Tunnel adapter isatap.{B8744701-36BB-4CD4-8CC8-69B563D4B05A}:


Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes


Tunnel adapter isatap.{8F535E61-1087-43CC-BE6F-AEA9B74E3A69}:


Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes


Tunnel adapter Teredo Tunneling Pseudo-Interface:


Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Any help would be greatly appreciated!

 

[DMHolt57]

the subnet mask should be 255.255.255.0 and the default gateway is not present, what is your router brand, are you using a range extender? Try changing Workstation on the system page to something personal on all your machines, then setup the network connection from the main page of Network and Sharing, setup new connection or network. Your router address should be the default gateway and can be set in the advanced button of the ipv4 properties page, something like 192.168.0.1

 

[UsernameIssues]

Welcome to the Seven Forums.

And thanks for the detailed post.

You are getting a "169..." IP address. Do you see that?

Autoconfiguration IPv4 Address. . : 169.254.101.78(Preferred)

Do you also get a "169..." IP address when the laptop is connected via that same LAN cable?

If so, then check to see if DHCP is turned on at the router.

 

[benjy206]

Yes i would say its a problem with the DHCP on the router. If you open command prompt - start - cmd - type the following command: ipconfig /release
: ipconfig /renew
See if this helps

 

[HelloThere]

the subnet mask should be 255.255.255.0 and the default gateway is not present, what is your router brand, are you using a range extender? Try changing Workstation on the system page to something personal on all your machines, then setup the network connection from the main page of Network and Sharing, setup new connection or network. Your router address should be the default gateway and can be set in the advanced button of the ipv4 properties page, something like 192.168.0.1

Welcome to the Seven Forums.

And thanks for the detailed post.

You are getting a "169..." IP address. Do you see that?

Autoconfiguration IPv4 Address. . : 169.254.101.78(Preferred)

Do you also get a "169..." IP address when the laptop is connected via that same LAN cable?

If so, then check to see if DHCP is turned on at the router.

Thanks for the replies.

I tried manually setting the IP (191.168.100.4 - as specified in the router for "Workstation"), subnet mask (255.255.255.0 or 255.255.0.0) and the default gateway (the address I use to connect to the router in the web browser), but it doesn't work, and I get an error.

Router: Huawei HG8245.

On the laptop I get 191.168.100.2 as the IPv4 address, as well as the router's IP next to the default gateway (which on my workstation is blank), and the subnet mask being 255.255.0.0.

 

[HelloThere]

@benhy206: Will try it now.

Edit:

Ipconfig /release:

An error occurred while releasing interface Local Area Connection : An address has not yet been associated with the network endpoint.

An error occurred while releasing interface Loopback Pseudo-Interface 1 : The system cannot find the file specified.

* * *

/renew

An error occurred while renewing interface Local Area Connection: Unable to contact your DHCP server. Request was timed out.

An error occurred while releasing interface Loopback Pseudo-Interface 1 : The system cannot find the file specified.

 

[benjy206]

well yes if the IP is 191.x.x.x then it's a class B subnet which is 255.255.0.0 not 255.255.255.0. what is the default gateway on your laptop?

 

[UsernameIssues]

If you plug the laptop into the same LAN cable that they desktop was using...
...then restart the laptop
...do you still get 191.168.100.2 for an IP address?
...can you surf the web while connected that way?

If so, then I misunderstood when you said "...and the same issue occurs when I try it on my laptop". I erroneously extended that to you not being able to surf from the laptop when using the LAN cable and you only meant to convey that the laptop gets the same "Unidentified network" message. My bad.

If the laptop can surf after restarting while using the LAN cable - then the DHCP server is working on the router. Unless it has been assigned a tiny range of IP addresses to dole out (like 2 thru 4), then there is probably nothing wrong with the router. It appears as if the desktop's motherboard has two network adapters. Have you tried them both?

It also sounds like this LAN cable configuration used to work - because you have installed updates. Maybe one of those updates was a network driver. If so, then back that update out.

 

[benjy206]

Looks like a driver issue. Maybe! Have you done any updates on the pc? If so like usernameissues says roll back the driver.

One more thing to try is ping you NIC card

ping 127.0.0.1

 

[HelloThere]

...then restart the laptop

...do you still get 191.168.100.2 for an IP address?
Yes.
...can you surf the web while connected that way?
No, only through Wi-Fi.

LAN works neither on the laptop nor the other PC, but on the laptop it displays the default gateway (router address), which on the other is blank.

It appears as if the desktop's motherboard has two network adapters. Have you tried them both?
Indeed, none work.

I've uninstalled and installed the latest network driver. Then again, it doesn't work on the laptop either.


ping 127.0.0.1

Pinging 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128

Ping statistics for 127.0.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

 

[benjy206]

If it works through the WiFi then maybe the ports are disabled in your router configurations?

EDIT: Or maybe its the cable that could be broke? If you have a spare cable try that also

 

[TheCyberMan]

Can you list any Modems or ADSL modem/routers and/or access points/wireless routers and /or Range extenders(wireless repeaters) that you are using please?

That autoconfiguration Appipa address subnet mask is normal when you cannot receive an ip address from the router DHCP server just means no internet access.

When you updated your ethernet cards drivers did you download from the computer manufacturer's website if a branded computer or motherboard website if a custom build it is advisable to do that rather than just a re-install if that fails?

 

[HelloThere]

The ports are enabled, according to the router. I've tried another cable; still the same.

I'm using only one router: Huawei HG8245. I downloaded both from Broadcom and Asrock (MOBO manufacter). The original driver was from the motherboard driver CD.

Edit: http://www.huawei.com/en/products/fixed-access/fttx/ont/hg8245/index.htm I don't know whether it's wrong to call it a router...

 

[UsernameIssues]

Assuming that the router assigns IP addresses in a sequential order (some routers don't for security reasons) - then your router has seen 3 or 4 mac addresses since the last reset:
dateway is ...100.1
laptop LAN nic ...100.2
laptop Wi-Fi nic ...100.3
desktop nic#1 ...100.4
desktop nic#2 ...100.5 ??

Not that any of the info above really matters, I'm just thinking "out loud" as it were.

So, if two computers cannot surf via LAN cables, then we are back to it being an issue with the router.

 

[benjy206]

It might not be a driver issue since you desktop and you laptop aren't connecting wired. If it was just one then maybe but since them both aren't connecting. It could be the routers ports that are at fault.

 

[HelloThere]

It was my ISP who installed the router. I don't know whether another will function, but it's worth a try. I have a fiber network, if it makes any difference.

 

[TheCyberMan]

Check the DHCP server is enabled on the huawei because of below:

An error occurred while renewing interface Local Area Connection: Unable to contact your DHCP server. Request was timed out.

Also can you provide an ipconfig /all when connected wirelessly to the huawei and have internet connectivity?

 

[UsernameIssues]

Think of the box as a mufti-function printer/scanner/fax. If you want to talk about the scanning feature, you call it a scanner. This box has an ONT function, a router (NAT/DHCP/ports) function and a WAP function.

Maybe some screenshots of the router interface would help us:
http://www.sevenforums.com/tutorials/9733-screenshots-files-upload-post-seven-forums.html

 

[HelloThere]

I'm sorry, but I'm not sure how to enable DHCP. At least there's no option to do that in the router...
Here's a screenshot:

IPconfig /all (wifi) (sorry, it's in Norwegian):
Windows IP-konfigurasjon

Vertsnavn . . . . . . . . . . . : Laptop
Primær DNS-suffiks . . . . . . . :
Nodetype . . . . . . . . . . . . : Blandet
IP-ruting aktivert . . . . . . . : Nei
WINS Proxy aktivert . . . . . . . : Nei

Trådløst LAN-kort Trådløs nettverkstilkobling 2:

Medietilstand . . . . . . . . . . : Medium frakoblet
Tilkoblingsspesifikt DNS-suffiks :
Beskrivelse . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
Fysisk adresse . . . . . . . . . : 02-10-59-76-A1-75
DHCP aktivert . . . . . . . . . . : Ja
Automatisk konfigurasjon aktivert : Ja

Trådløst LAN-kort Trådløs nettverkstilkobling:

Tilkoblingsspesifikt DNS-suffiks :
Beskrivelse . . . . . . . . . . : Broadcom 802.11n nettverkskort
Fysisk adresse . . . . . . . . . : 02-10-59-76-A1-75
DHCP aktivert . . . . . . . . . . : Ja
Automatisk konfigurasjon aktivert : Ja
Koblingslokal IPv6-adresse. . . . : fe80::2d65:1cde:68d4:b3f7%11(Foretrukket)

IPv4-adresse. . . . . . . . . . . : 192.168.100.2(Foretrukket)
Nettverksmaske . . . . . . . . . .: 255.255.255.0
Leieavtale inngått. . . . . . . . : 11. mars 2013 16:39:34
Leieavtale utløper. . . . . . . . : 14. mars 2013 16:40:39
Standard gateway . . . . . . . . .: 192.168.100.1
DHCP-server . . . . . . . . . . . : 192.168.100.1
DHCPv6-IAID . . . . . . . . . . . : 410575872
DHCPv6 klient-DUID. . . . . . . . : 00-01-00-01-16-A0-F1-FD-70-5A-B6-FF-48-53

DNS-servere . . . . . . . . . . . : 192.168.100.1
NetBIOS over Tcpip. . . . . . . . : Aktivert

Ethernet-kort Lokal tilkobling:

Medietilstand . . . . . . . . . . : Medium frakoblet
Tilkoblingsspesifikt DNS-suffiks :
Beskrivelse . . . . . . . . . . : Atheros AR8132 PCI-E Fast Ethernet Contro
ller
Fysisk adresse . . . . . . . . . : 70-5A-B6-FF-48-53
DHCP aktivert . . . . . . . . . . : Nei
Automatisk konfigurasjon aktivert : Ja

Tunnelkort Lokal tilkobling* 3:

Tilkoblingsspesifikt DNS-suffiks :
Beskrivelse . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Fysisk adresse . . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP aktivert . . . . . . . . . . : Nei
Automatisk konfigurasjon aktivert : Ja
IPv6-adresse. . . . . . . . . . . : 2001:0:5ef5:79fd:8c3:940:abd9:6b11(Foretr
ukket)
Koblingslokal IPv6-adresse. . . . : fe80::8c3:940:abd9:6b11%20(Foretrukket)
Standard gateway . . . . . . . . .: ::
NetBIOS over Tcpip. . . . . . . . : Deaktivert

Tunnelkort Reusable ISATAP Interface {B6C321B1-2248-4EB9-BD94-D0FA99322AAE}:

Medietilstand . . . . . . . . . . : Medium frakoblet
Tilkoblingsspesifikt DNS-suffiks :
Beskrivelse . . . . . . . . . . : Microsoft ISATAP Adapter #3
Fysisk adresse . . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP aktivert . . . . . . . . . . : Nei
Automatisk konfigurasjon aktivert : Ja

Tunnelkort isatap.{054DE46E-06B0-4DFC-AF26-2876B2CB43C5}:

Medietilstand . . . . . . . . . . : Medium frakoblet
Tilkoblingsspesifikt DNS-suffiks :
Beskrivelse . . . . . . . . . . : Microsoft ISATAP Adapter #4
Fysisk adresse . . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP aktivert . . . . . . . . . . : Nei
Automatisk konfigurasjon aktivert : Ja

Edit:

New image link:

 

[benjy206]

everything seems fine there. Try to connect manually when wired.

First: Right click the monitor on the bottom right and open network and sharing center
2nd: click on the change adapter settings
3rd: Right click local area connection and go to properties
4th: look for ipv4 and click on it and go down to properties and open it
5th: then click the use the following ip address:
ip = 192.168.100.5
subnet = 255.255.255.0
default gateway = 192.168.100.1
see if this works