Update as of september 2011: Microsoft has launched a small script/tool, that could help you out. You can find it here: http://support.microsoft.com/kb/928233/en-us
I’ve had problems with my connections in Vista for quite a while now, and I think i finaly have found the solution. My problem was that I lost the connection after a while without really knowing why. My xp-laptop were still online. Anyway, after discovering that my linksys router may not support DHCP BROADCAST flag, i found a solution from Microsoft on how to disable this function in Vista. So far my connection have been stable after adding the DhcpConnDisableBcastFlagToogle
So, here is how you do it.
1. Click Start
, type regedit in the Start Search box, and then click regedit in the Programs list.
If you are prompted for an administrator password or for confirmation, type your password, or click Continue.
2. Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{GUID}
In this registry path, click the (GUID) subkey that corresponds to the network adapter that is connected to the network.
If you don’t know wich one of those cryptic {GUID} to select, just find the one that has got an IP address. (se screenshot below)
3. On the Edit menu, point to New, and then click DWORD (32-bit) Value.
4. In the New Value #1 box, type DhcpConnDisableBcastFlagToggle, and then press ENTER.
5. Right-click DhcpConnDisableBcastFlagToggle, and then click Modify.
6. In the Value data box, type 1, and then click OK.
7. Close Registry Editor.
If you are using both wireless and regular connection, you’ll need to add DhcpConnDisableBcastFlagToggle to both.
I hope this works out for you. If it does or doesn’t please leave a comment on this page.
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thank so much mate, you sorted out my problem, any idea about how to fix it on a mac? My mac is still dropping the connection!
Great advice, this worked for me after lots of searching. Microsoft also have a tool (I discovered later) which can do the legwork for you:
http://support.microsoft.com/kb/928233/en-us
Great tip Maverick. I’ll update the article. Thanks.
Thank you! Thank you! Thank you! This problem has been bothering me for over one year now. Finally fixed. Amen & QED.
huge vista update problem with my hp laptop as of September constant connection lost with internet, vista does not detect my internal webcam, refuse any usb connection, control my fan speed and hence resulting a low power to my cpu fan which shutdown the laptop as soon as its turn on and keep restarting. vista sucks.
Sorry, this did not fix my problem!
Didnt fix mine, not sure whats wrong, but followed to a «t», and still no network. Adapter is enabled, cable connected, tried different cables, and different switches, all others on network are fine. It was a fresh install, full update, then no connection. And I’m only stuck with Windows because they have yet to support the intel Z68 chipset in ubuntu. I hope they some out with fix soon. I’m remembering how much I hated Vista, but its the only 64 bit Windows I own right now, and I’m certainly not going out to buy one, thats for sure.
Thank you VERY MUCH!
Some expert on my Internet Company tried to find solution by working 40 minutes – without result. One man people say is the best expert in my city work 30 minutes to find solution – without result. I work 5 minutes according your advices – and… it working excellent.
Thanks again
Markus Sweden living in Thailand
Bare hyggelig Markus
You’re most welcome.
Ugh. My Sony Vaio laptop, (windows vista) will have connection for a while, like a few hours at a time if im lucky, but then the screen and everything will freeze for a few seconds, and then the little internet icon next to the battery turns to the red x, for no connection. i dont know why it does this, or how to fix it. the only way the internet will come back, is if i put it to sleep, hybernate it or restart/shut it down. but i sleep it because its faster to wake back up+ has the same effect. But it wont connect to the internet or find my router if i try to press the refresh button for search for a network, nothing will happen. this has been happening for 4 years. please help. i tried doing the adding the disable thing, but it seemed to have no effect. please someone help me.
So many months of frustration!! So happy to have come across this page!! Much appreciation. So far, so good, and looking forward to being able to use the Internet without constantly having to re-connect. THANK YOU.
Hi. This worked well for a long while (more than an hour, for the first time), but then the same problem returned. I am wondering what you mean under step 7 when you say, «If you are using both wireless and regular connection, you’ll need to add DhcpConnDisableBcastFlagToggle to both.» Is there anything more I need to do to make the fix stick after I go through the first 6 steps? How do I add «DhcpConnDisableBcastFlagToggle»? Thanks!
Unfortunately, the old problems have returned! I connect, then lose my connection, only have «local access,» reset it and try again! You state above to type «DhcpConnDisable….», while the Microsoft site states to type «DhcpConnEnable….». I’ve tried it both ways now, disable and enable, and neither is fixing the problem. Any other suggestions? Thank you.
Thanks a lot..It worked perfectly..Another link that I found helpful in this regard is http://vistaproblems.com/2011/vista-problems-associated-with-windows-mail/
My problem is laptop connects with no internet access. I can see my wireless network, but connects and lables it as an unidentified network. Will this correct this aslo? If, not, what will. All my other wireless devices connect fine.
Oh My God – it worked!! Thank you so much. Now what is the process for wireless?
The process is the same for wireless. It’s one of the other elements in the list.
Did not fix my problem.
It worked for me too! Thanks. The really strange thing is that I’ve had my computer, modem, router, etc. for over a year and never had a problem until a week ago. I ran SpyBot and then the problem showed up – I would be surprised if SpyBot caused this, but this is the only thing I can think of that changed.
Hi Jeremy,
Have you tried updating your Atheros Driver? I am certain if you do this you will connect in seconds
Thank you SO MUCH for your help. It’s been a complete pain for the last year and like many others I’ve tried so many hardware/firmware things to fix it with no joy. So thank you very much indeed
Vicky
Thank you also to Maverick for the Microsoft link