Ad-hoc not working anymore

[Hardik]

I have a desktop and a laptop computer and on both I am running Windows Vista. The desktop computer has wired connection without a router or a modem and it has a Wlan usb card. The laptop is suppose to connect to the desktop pc via Wlan and get internet via there. This was not working since I got the laptop some years back. When I had a Macbook then it worked properly. But when I had a XP laptop then it used to work but then it dropped the connection sometimes. But now with the Vista laptop I am not able to connect to the desktop pc properly. Check the below ipconfig /all for both the machines when they are connected to each other:

Microsoft Windows [Version 6.0.6000]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.

C:\Users\hardik>ipconfig /all

Windows IP Configuration

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

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Wireless WiFi Link 4965AGN
pter WPN111
Physical Address. . . . . . . . . : 00-13-E8-82-B2-B3
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Autoconfiguration IPv4 Address. . : 169.254.20.55(Standard)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Network Connection:

Connection-specific DNS Suffix . : Disconnected
Description . . . . . . . . . . . : Broadcom NetLink (TM) Fast Ethernet
Physical Address. . . . . . . . . : 00-15-C5-7E-56-55
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection*:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . :
isatap.{4A6AEEC8-1F02-4C11-9427-C67757CB7
D83}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Local Area Connection* 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::5efe:169.254.20.55%14(Standard)
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled

[anshusehgal]

It might be that Windows Vista is not able to obtain an IP address from certain routers or from certain non-Microsoft DHCP servers. So, to fix this problem automatically, click the Fix it button or link. Click Run in the File Download dialog box, and then follow the steps in the Fix it wizard here - http://go.microsoft.com/?linkid=9708108

[Mr. Boo Bear]

Can you try to setup the connections seperately with specified IP's for you ad-hoc and then uncheck the allow internet sharing ICS. After that try to bridge your modem and wireless and then take all the specified IP's off, so they are all auto now, and see if that works. I think that ICS might be the problem here.