Vista unable to connect to Internet over Wifi

[atl_man]

I have two machines: one old (XP) and one brand new (Vista Home Premium), both connected to a wifi network. XP machine has no problem connecting to internet. Vista connects to router, but cannot detect/ connect to internet. I also have an IP Phone on the router and that works fine too.

I tried the usual stuff: Shut off laptops, router, modem and restart them (modem, router, laptops). That made no difference.

IP Config of Vista given below:

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

C:\Users\YYYY>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : YYYY-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : Belkin

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . : Belkin
Description . . . . . . . . . . . : Broadcom 802.11g Network Adapter
Physical Address. . . . . . . . . : 00-1C-26-B0-79-E7
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::2070:4f26:a396:c5a0%10(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.2.3(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Saturday, December 15, 2007 10:52:44 AM
Lease Expires . . . . . . . . . . : Tuesday, January 21, 2144 6:14:57 PM
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DHCPv6 IAID . . . . . . . . . . . : 251665446
DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 7:

Connection-specific DNS Suffix . : Belkin
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::5efe:192.168.2.3%17(Preferred)
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Local Area Connection* 10:

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

IP Config for XP laptop (working properly):

Microsoft(R) Windows DOS
(C)Copyright Microsoft Corp 1990-2001.

C:\DOCUME~1\XXXX_~1>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : ABCD4HU
Primary Dns Suffix . . . . . . . : ad.abcd.com
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : ad.abcd.com
Belkin
abcd.com

Ethernet adapter {71B17FE0-4592-4C36-9CD4-F0CE697B2541}:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Check Point Virtual Network Adapter
For SecureClient - Packet Scheduler Miniport
Physical Address. . . . . . . . . : 54-55-43-44-52-08

Ethernet adapter Wireless Network Connection 2:

Connection-specific DNS Suffix . : Belkin
Description . . . . . . . . . . . : Intel(R) PRO/Wireless 2915ABG Networ
k Connection
Physical Address. . . . . . . . . : 00-13-CE-A3-C7-DD
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.2.4
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 192.168.2.1
Lease Obtained. . . . . . . . . . : Saturday, December 15, 2007 11:01:15
AM
Lease Expires . . . . . . . . . . : Monday, January 18, 2038 10:14:07 PM


Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connecti
on
Physical Address. . . . . . . . . : 00-0E-7B-61-44-9E


Please help.
Regards

[johnwill]

Please supply the following info, exact make and models of the equipment please.

Make and model of the broadband modem.
Make and model of the router.



Changes that may help to increase the compatibility of Vista with older networking devices:



Disable the IP Helper service:

1. Go to Start and type in "services.msc" (without the quotes) and press Enter
2. Scroll down to the IP Helper service, right click on it and select Properties
3. In the dropdown box that says "Automatic" or "Manual", set it to Disabled and then click on "Apply"
4. Then click on "Stop" to stop the service from running in the current session
5. Click OK to exit the dialog



Disable IPv6:

1. Go to Start and type in "ncpa.cpl" (without the quotes) and press Enter
2. Right click on each network connection and select "Properties"
3. Remove the checkmark from the box next to "Internet Protocol Version 6 (TCP/IPv6)
4. Click OK to exit the dialog

NOTE: You should do this for each network connection.



Disable the DHCP Broadcast Flag:

Link: http://support.microsoft.com/default.aspx/kb/928233

1. Go to Start and type in regedit and press Enter.
2. Locate and then click the following registry subkey:
3. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{GUID}
4. In this registry path, click the (GUID) subkey to be updated.
5. If the key DhcpConnForceBroadcastFlag does not exist, use the Edit menu, point to New, and then click DWORD (32-bit) Value. In the New Value #1 box, type DhcpConnForceBroadcastFlag, and then press ENTER. If the key exists, skip this step.
6. Right-click DhcpConnForceBroadcastFlag, and then click Modify.
7. In the Value data box, type 0, and then click OK.
8. Close Registry Editor.

NOTE: You should do this for each and every GUID subkey.




The only program I'm aware of that currently relies on IPv6 is the new Windows Meeting Space. The first 2 changes will cause that program not to work - but will leave all of your normal (IPv4) connections unaffected. If it causes problems that you can't overcome, simply revert back to the original settings.