i think its a dns issue that's why apps like torrent and nntp still work, i gave in and switched back to xp my symptoms were that i could not browse the internet after around 2 hours i only had nod32, zonealarm, and nero installed on a vista sp1 ultimate system, im sure the problem was with dns just never had the time to look into it.

null

I had the same browser problem for two weeks now, but solved it yesterday by upgrading the firmware of my router. Works fine now and it's not stopping anymore. I had lots of "404 site cannot be found", or "access denied" etc...before.

I have the same problem with my browsers (IE and Firefox). They work for only 30Min- 1 Hour after that, nothing. The rest still works, like MSN and Utorrent. My computer is just three weeks old, and i have the problem from the beginning. already re-installed the OS and that didn't help. I did everything mentioned in the postings above, nothing helps. I'm not a computer expert at all and i'm really looking for an answer.

I have a Dell Inspiron 530S computer with the following specs:

Intel Core2 Duo E8400 @ 3,00GHz
3 GB Ram
32 Bits OS Vista Home Premium SP1
ATI Radeon HD 2400 Pro
Broadcom 802.11g Wireless

Programs i use:
Zone-alarm
NOD32
UTorrent
MSN Messenger
I-Tunes

I think you have too much going on. You should only have one security system running, you can also get rid of Windows Defender if you have it on. Have you checked to see if Nero is compatible with all these other programs?

__________________
Celestra

I have the same problem, but my wifes computer is fine.
hers is an hp laptop 1 year old running vista,
mine is an hp laptop 1 day old running vista,
both connected by wifi to the same router.
We both use zone alarm and avast, i hope microsoft sort this out soon, or i am going back to apple

I was having this problem as well. IE/Firefox will work most of the time, but then randomly it'll stop (Address could not be found) and the only solution was to restart computer. (this is a brand new computer that I put together myself) Other internet activities continued to work fine. I read this whole thread and couldn't find anything very helpful.

I rebooted my router and haven't had problems since. My guess is that this problem can be caused by a ton of things.

After my post yesterday i tried a winsock reset and tc/ip reset and since then no problems, even after using the internet for about five hours last night, switching off over night and four hours use this morning.

hi there,

im from switzerland, so please dont mention my poor english, i know it myself (:

im facing the same problem as you all. this fault has been apearing like a month ago, very special about it is, that it came up in the whole network (3 PCs 2x vista bussines 1x vista home) So maybe the problem is locked in the network settings...

i dont know much about vista and its programming, so i cant tell what the problem might be...

a friend of mine ordered me to deactivate the TCP/IPv6 protocol, what really enhanced the time until my firefox / IE went offline...

I had a lot of these same problems too after installing Vista Ultimate 64bit on a system i built for myself. Yes all the hardware is 64 bit ready.
The Vista DVD had Service Pack 1 on it too. I assume a recent Microsoft Update that was installed has ended all my problems as none have returned since.
I will look at at my update history and see if i can tell which one it was if this is any help.

First, can I thank all you guys for your comments on this forum. Without all the contributions, everyone feels on their own.

We are a System Support company who look after small and medium sized companies. We don't have to tell our clients not to use Vista, they tell us! Amongst our hundreds of users, we have one Vista machine. No FD in any of our clients'companies wants Vista on their site.

However, we need to run it and use it for training. We have had two experienced users using it ....but they are going back to XP Pro asap (Yes, both have the browser problem). Vista reminds us of ME all over again.

Enough slating the product (though I don't see why anyone should spend good money on Vista Ultimate and have to beta test it for Microsoft - campaign for free Windows 7 license for all Vista buyers).

The reason for posting is that I have experienced this problem for months now. Ping, vnc, telnet ....virtually any other port is fine; http on any browser locks up. I've tried nearly all the remedies offered here (including the links to half-open). None of them work for me. (I agree with the suggestion that it is a dns issue within Vista - Vista just loses all DNS for some reason).

However, today, is the third day without the problem happening. What have I done? Turned off the sidebar and all it's gadgets.

Now, I'm not suggesting for one minute this resolves the issue, but http connections from all these gadgets appears to exacerbate the issue for me. This was no more apparent when I turned the sidebar on last week and down went the browser.

If anyone does get to the bottom of this, please post.

Cheers