This could well be an issue with your router. Vista uses UPnP much more
heavily than XP ever did, and we've found that a lot of routers have
suboptimal UPnP implementations, which causes the router to hang/crash.
Once that happens, only power-cycling the router will restore connectivity.
Does this happen on both a wired
connection to the router AND a wireless connection?
Try running the router tool at
http://www.microsoft.com/windows/using/tools/igd/default.mspx, and see if it
passes the tests.
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
itself. 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>
If it STILL locks up on you, there's not much we can do. It would appear
the router is cooperating in some fashion.
K.
