ipconfig doesn't show any IP

[Raph]

Hello,

I have an HP/Compaq nc6120 laptop with a Broadcom NetXtreme Gigabit
Ethernet NIC and Cisco VPN Client installed. I have the following issue
at the moment. If I type ipconfig, I don't get any IP address or
netmask showed:
C:>ipconfig

Windows IP Configuration

C:>

I already had this issue in the past and the only solution at that time
was to use a system restore. The problem is that at the moment, I don't
have any restore point available which would allow me to go back to a
previous state.

So, here is what I tried:
1. I uninstalled the Cisco VPN Client
2. I rebooted in safe mode
3. I removed the driver for the NIC from the Device Manager
4. I rebooted in normal mode and installed the driver again
5. ipconfig still doesn't show anything. But the connectivity is there,
I can browse the Internet, etc...

I also noticed that when Windows starts, if I open immediately a
command prompt and type ipconfig, I can see all the IP details. After
some time, ipconfig doesn't give me any output anymore. This is
approximately at the same time as the network connection status icon
appearing in the lower left task tray.

I also tried to reset the winsock catalog with "netsh winsock reset",
without any success.

Any help is more than welcome. Thanks in advance,
Raphael

 

[Robert L [MVP - Networking]]

I had a case like this one. The LAN administrator hided all TCP/IP setting. I don't remember he used group policy or modified the registry.

Can you check the properties of the LAN? Can you open the LAN Support tab? If not, open regedit and search for tcpip. You should have all TCP/IP information.

Please post back with the result.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
Hello,

I have an HP/Compaq nc6120 laptop with a Broadcom NetXtreme Gigabit
Ethernet NIC and Cisco VPN Client installed. I have the following issue
at the moment. If I type ipconfig, I don't get any IP address or
netmask showed:
C:>ipconfig

Windows IP Configuration

C:>

I already had this issue in the past and the only solution at that time
was to use a system restore. The problem is that at the moment, I don't
have any restore point available which would allow me to go back to a
previous state.

So, here is what I tried:
1. I uninstalled the Cisco VPN Client
2. I rebooted in safe mode
3. I removed the driver for the NIC from the Device Manager
4. I rebooted in normal mode and installed the driver again
5. ipconfig still doesn't show anything. But the connectivity is there,
I can browse the Internet, etc...

I also noticed that when Windows starts, if I open immediately a
command prompt and type ipconfig, I can see all the IP details. After
some time, ipconfig doesn't give me any output anymore. This is
approximately at the same time as the network connection status icon
appearing in the lower left task tray.

I also tried to reset the winsock catalog with "netsh winsock reset",
without any success.

Any help is more than welcome. Thanks in advance,
Raphael

 

[Raph]

Hello,

Since I'm logged locally and not on a domain, I doubt a LAN
administrator could have had any influence on my laptop.

I can open the properties of the connection, yes.

Any other ideas?

Thanks,
Raphael

 

[Raph]

Hello,

I noticed that by performing many ipconfig /all, just after windows
startup, ipconfig shows me the ip, as long as IP Routing is set to
'No'.

From the moment IP routing is set to 'Yes' after some time, I can't see

the IP address anymore with ipconfig.

I checked the registry and the value of IPEnableRouter is set to 0 (so,
IP routing should be disabled). When I set this value to 1, I don't get
any IP with ipconfig from the very beginning of the windows startup.

My conclusion is that at some point, the ip routing gets enabled by
some service or some program. Do you have any idea how I could find the
culprit?

Thanks,
Raphael