Vista connection issues, DHCP error

[Sidbob]

Hello, this is my first thread, I joined so I could try and get this problem fixed.

I will get right down to it. I was installing some vista updates, as I have done a thousand times before, but this time my laptop crashed BUT I'm not sure when it happened because I was out of the room. After messing around with it for a while I managed to get it past the bios screen (it got stuck there a few times at first) and onto the desktop.

The connection I'm on is part of a University accomodation thing, I plug one end of the ethernet cable into the wall socket and the other into my laptop and all of the settings are automatic, it just "works".

I tried connecting to the internet after getting it to the desktop but it only recognised the connection as "local only", not internet enabled. I tried all the usual stuff, reboots, windows diagnostics etc and got my flat-mate to plug his laptop into my connection, it worked fine on his. I eventually did a restore-point to a couple of days ago and still nothing. Then I moved onto the command prompt and encountered another problem:

ipconfig /release - This worked as normal

ipconfig /renew - However this kicked up a fuss whenever I tried it and gave me this message:

"An error occurred while renewing interface Local Area Connection, unable to contact your DHCP server"

Now as I'm a student I can't afford to be messing about with this stuff so I did the only thing that I knew would work 100%, backup and restore to factory settings from the boot-disk.

Did all that and I STILL get the same damn message about the DHCP server. I have never encountered a problem in my entre life that persisted through a full reformat/reinstall of windows job and now I'm utterly lost.

Here is the info displayed on ipconfig/ all in command prompt:

Link-Local IPv6 Address: Fe80::457:ad91:e483:cc7a%8 (preferred)
Autoconfiguration IPv4 Address: 169.254.204.122 (preferred)
Subnet mask: 255.255.0.0
DHCPv6 IAID: 167779100

Thanks in advance for helping me. I posted this on the Vista board also but nobody seems to know over there, this board seems a little more relevant.

[johnwill]

First, make sure the machine is connected to a working Ethernet connection with a known good cable (test with another machine).


TCP/IP stack repair options for use with Windows Vista.

Start, Programs\Accessories and right click on Command Prompt, select "Run as Administrator" to open a command prompt.

In the command prompt window that opens, type type the following commands:

Reset WINSOCK entries to installation defaults: netsh winsock reset catalog

Reset IPv4 TCP/IP stack to installation defaults. netsh int ipv4 reset reset.log

Reset IPv6 TCP/IP stack to installation defaults. netsh int ipv6 reset reset.log

Reboot the machine.



I'd then like to see this:

Hold the Windows key and press R, then type CMD to open a command prompt:

In the command prompt window that opens, type type the following command:

IPCONFIG /ALL

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.

If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.

[workman]

im having the same exact problem and i did all of the above. here is the information.Microsoft Windows [Version 6.0.6001]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.

C:\Users\young>ipconfig/all

Windows IP Configuration

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

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/Wireless 3945ABG Network Con
nection
Physical Address. . . . . . . . . : 00-1F-3C-9E-38-2B
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet
Physical Address. . . . . . . . . : 00-1C-25-93-53-B3
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::69ec:5de3:e49e:d898%10(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.216.152(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
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 Local Area Connection* 6:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{65C817A6-D5F4-42D1-A91C-0843D6E4C
C5C}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 7:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{0298BAAB-6F90-4895-8AA2-44850999B
AFD}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

C:\Users\young>

[johnwill]

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



Disable the IP Helper service:

1. Hold the Windows key and type R, enter "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. Hold the Windows key and type R, enter "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. Hold the Windows key and type R, enter 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.
NOTE2: (GUID) is a mnemonic for the individual subkeys, the actual text "GUID" does not appaer.




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.