I'm sorry you're experiencing trouble. From a previous post by my coworker
Karl, this could well be an issue with your router. Differences in the
stack between XP and Vista have exposed a lot of router bugs which were
Vista uses UPnP much more heavily than XP ever did, and we've found that a
lot of routers have suboptimal UPnP implementations, causing them to crash.
1. Does this happen on both a wired connection to the router AND a wireless
2. when Vista "loses" connection, does it come back automatically, or do you
have to reboot your router? Do the other xp machines also lose
3. If ONLY the vista machine loses connectivity, then there is an issue with
your vista machine. Make sure your drivers are all up to date. If
wireless, make sure you have the latest drivers for your card. Go to
linksys' website and verifiy that what you've got is the latest.
4. While you're there, make sure you have the latest firmware for your
router. We found a lot of bugs in router firmware during development, and
the vendors posted a lot of firmware updates.
5. Then, try running the router tool at
, and see if it
passes the tests.
If we can narrow the issue down to your router, that is, that when Vista
loses connectivity ALL the machines (xp too) lose connectivity, then there
are some things worth trying:
A possible solution worth trying is to turn of UPnP. This can be done on
the router (you would have to log onto the routers config page, find out
where it has the UPnP on/off switch, and turn it off) or from the machine
You can also try disabling window scaling.
So, please try these out:
1. Go to the webtool, and when the test is finished, click on the "view
detailed report" link, and copy that data off & save it.
2. turn off UPnP, either on the router or on the vista machine:
from an elevated command prompt,type the following:
a. sc config SSDPSRV start= disabled
b. net stop ssdpsrv <or> reboot the system
3. Try your test again. If it still fails after some perioed of time, turn
off Window Scaling:
From an elevated command prompt, type the following:
a. netsh in tcp set gl auto=di
<no reboot required>
"Fred Marshall" wrote:
> I turned off sleep/hibernation modes entirely to avoid the problem. The
> system boots into a good state consistently and loses something critical if
> it sleeps or hibernates. I suspect what's being lost is DNS but can't
> figure out why.
> With static IP, the DNS addresses are also static. So why DNS would be lost
> is puzzling.
> The result is no connection through to the internet.
> Another result is that the system appears to get nothing from the browse
> I sniffed the network and it appears that, when broken, the Vista machine is
> sending out packets and no packets are being sent back to it! Seems like
> that ought to be a real clue but I'm a bit mystified as to what that would
> be. It has all the appearance that none of the outgoing packets are being
> received except my sniffer computer sees them! Maybe some bad interaction
> with the router.
> I've ordered a gigabit switch to do all the interfacing on the network.
> Will see if that helps. I'd prefer to not replace the router but may need
> to do that? It's an old Linksys BEFW11S4.
> "Robert L [MVP - Networking]" <email@example.com> wrote in message
> I answered your question in other post. Try to re-configure the NIC. This
> cases may help,
> Losing wireless connection to ...Also, try to re-configure the NIC. This
> case may help, Solved: Limited connectivity with ...Solved: Limited
> connectivity with Vista notebook . ...
> chicagotech.net :: View topic - Solved: Limited connectivity with ...
> A135-S4427 Satellite notebook that was just released with Vista Home
> Premium, ... A: You may need to re-configure the NIC, for example low the
> speed. ...
> Acquiring network address
> 2. Re-configure the NIC speed and duplex. 3. Upgrade the router or
> switch firmware. Related Topics. Cannot access the network because of NIC
> settings ...
> Bob Lin, MS-MVP, MCSE & CNE
> Networking, Internet, Routing, VPN Troubleshooting on
> How to Setup Windows, Network, VPN & Remote Access on
> "Fred Marshall" <fmarshallx@remove_the_x.acm.org> wrote in message
> Whenever Vista Ultimate sleeps it loses its internet connection.
> Static IP.
> Eventually it recovers but the wait is minutes long - or requires
> intervention by running repair.
> DNS isn't working
> XP machine on same network works fine.
> Vista U. machine works fine too - after it's "healed"
> Time after time ........