'no network access'

[Thunder3torm]

i got a wireless problem,and i dont think its with usb wifi device because it works on another pc just perfect and its on xp! im using windows 7 and when i connect to this 1 network i connect just fine but after 5 seconds i notice on the ipv4 status it says 'no network access' but still connected.
i tried disabling and enabling the adapter,deleting the wireless profile etc....no luck.

 

[kanewolf]

sounds like it is making an IPv6 connection rather than an IPv4 .

 

[Thunder3torm]

sounds like it is making an IPv6 connection rather than an IPv4 .

i have ipv6 unticked

 

[Solandri]

i have ipv6 unticked

Doesn't matter. Windows has a way of forcing IPv6 on you even if you don't ask for it. The fact that it gets an IPv4 connection for a few seconds before losing it is a characteristic symptom of IPv6 overriding IPv4. Open a command prompt, do an ipconfig /all and post the results here.

 

[Thunder3torm]

whats weird is its working again now

 

[Solandri]

whats weird is its working again now

That doesn't surprise me. I'm still trying to figure out exactly what causes this. One of my systems that got hit with it was a Win 7 virtual machine. I had made a snapshot of it with a working IPv4 config. It worked, I'd been using it for a few days that way without a hitch when I made the snapshot, and it continued to work for months afterward.

A few months later I reverted to that snapshot, and suddenly it didn't work. Just like you, it would get Internet access for a few seconds, then everything would come up with no network access. A little investigation revealed that the VM was defaulting to IPv6. Unchecking IPv6 didn't help - ipconfig /all still showed an IPv6 address. Eventually I fixed it with a registry hack to stop it from using IPv6 entirely.

But the fact that it happened to a known working snapshot of a VM has got me really scratching my head as to what causes this. I may find out more when I revert to the snapshot again (I use this VM for all potentially risky web browsing like torrent searches, and reset it every few months).