Vista Ultimate SP1 looses network connection

At least once a day my I notice all my network applications like Skype, GTalk
etc are trying to login again and I can't reach the internet with IE. When I
look at Network Sharing Center instead of the usual Home (private) network I
now have that and another Unknown Network, or only the Unknown Network shown.
If I reboot I get just the Home network showing and everything works again.
Sometimes I can disable the local area network adapter and re-enable it and
the connection stays up for a while. Other times trying to disable lan
adapter gives perpetual hourglass. Can anyone shed some light on this? I was
hoping not to have to reboot so often.

Dell XPS420 E8500 3.16Ghz
Vista Ultimate SP1
3GB DDR2, 500GB SATA, Intel 82566DCV-2 Gigabit NIC

Posting the result of ipconfig /all here may help. Or check this post.

Vista: local access and unknown network
http://www.chicagotech.net/netforums...hp?p=6721#6721

--
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
"Dabbler" <Dabbler@discussions.microsoft.com> wrote in message
news:F20CF5C8-C244-4EB6-B871-6A4A1F7E6F2B@microsoft.com...
> At least once a day my I notice all my network applications like Skype,
> GTalk
> etc are trying to login again and I can't reach the internet with IE. When
> I
> look at Network Sharing Center instead of the usual Home (private) network
> I
> now have that and another Unknown Network, or only the Unknown Network
> shown.
> If I reboot I get just the Home network showing and everything works
> again.
> Sometimes I can disable the local area network adapter and re-enable it
> and
> the connection stays up for a while. Other times trying to disable lan
> adapter gives perpetual hourglass. Can anyone shed some light on this? I
> was
> hoping not to have to reboot so often.
>
> Dell XPS420 E8500 3.16Ghz
> Vista Ultimate SP1
> 3GB DDR2, 500GB SATA, Intel 82566DCV-2 Gigabit NIC
>

On Jun 4, 3:11 pm, Dabbler <Dabb...@discussions.microsoft.com> wrote:
> At least once a day my I notice all my network applications like Skype, GTalk
> etc are trying to login again and I can't reach the internet with IE. When I
> look at Network Sharing Center instead of the usual Home (private) network I
> now have that and another Unknown Network, or only the Unknown Network shown.
> If I reboot I get just the Home network showing and everything works again.
> Sometimes I can disable the local area network adapter and re-enable it and
> the connection stays up for a while. Other times trying to disable lan
> adapter gives perpetual hourglass. Can anyone shed some light on this? I was
> hoping not to have to reboot so often.
>
> Dell XPS420 E8500 3.16Ghz
> Vista Ultimate SP1
> 3GB DDR2, 500GB SATA, Intel 82566DCV-2 Gigabit NIC

Just wondering but does your system go into Sleep mode when you leave
it? I have this problem with four of the dells running Vista Business
and all we ( the dell techs and I) came up with was to go into power
management and turn off sleep.
Toni

Yes, it happens when Vista comes out of sleep mode. As far as I can make out
a second network is created "Unknonw Network" which has IP 0.0.0.0 Also the
default gateway appears to have been changed to 0.0.0.0. I sometimes can
disable and enable the network adapter and it reconnects, other times I have
to reboot.

I'm going to try using static IP instead of DCHP and see fit that cures it.
Not a good fix on a LAN but I'm working out of a home office.

Here's my config.sys taken when my system has been disconnected:


Windows IP Configuration

Host Name . . . . . . . . . . . . : mla-XPS
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : neo.rr.com

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : neo.rr.com
Description . . . . . . . . . . . : Intel(R) 82566DC-2 Gigabit Network
Connection
Physical Address. . . . . . . . . : 00-1D-09-31-87-DA
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::fd42:8863:ec42:84d8%9(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.0.199(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Friday, June 06, 2008 8:33:56 AM
Lease Expires . . . . . . . . . . : Saturday, June 07, 2008 8:34:00 AM
Default Gateway . . . . . . . . . : 0.0.0.0
192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 6:

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* 7:

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

"toni321@charter.net" wrote:

> On Jun 4, 3:11 pm, Dabbler <Dabb...@discussions.microsoft.com> wrote:
> > At least once a day my I notice all my network applications like Skype, GTalk
> > etc are trying to login again and I can't reach the internet with IE. When I
> > look at Network Sharing Center instead of the usual Home (private) network I
> > now have that and another Unknown Network, or only the Unknown Network shown.
> > If I reboot I get just the Home network showing and everything works again.
> > Sometimes I can disable the local area network adapter and re-enable it and
> > the connection stays up for a while. Other times trying to disable lan
> > adapter gives perpetual hourglass. Can anyone shed some light on this? I was
> > hoping not to have to reboot so often.
> >
> > Dell XPS420 E8500 3.16Ghz
> > Vista Ultimate SP1
> > 3GB DDR2, 500GB SATA, Intel 82566DCV-2 Gigabit NIC
>
> Just wondering but does your system go into Sleep mode when you leave
> it? I have this problem with four of the dells running Vista Business
> and all we ( the dell techs and I) came up with was to go into power
> management and turn off sleep.
> Toni
>