No internet access after shutdown, unidentified network appears

Every time I shut down and start up again (and sometimes when doing a warm reboot), I find I no longer have internet access. When I click on the network tray icon (which shows an exclamation mark in a yellow triangle when this happens), it shows 2 networks: one called "Network" (my 'real' Home network) and one called "unidentified network". Opening the "Network and Sharing Center" brings me to the window below:

Clicking "connect or disconnect" doesn't seem to have anything to do with connecting or disconnecting, but merely re-opens the popup window for the tray icon, which, as it did before, simply invites me to return the the "Network and Sharing Center" again (does anyone else find this feature maddening?).

Anyway, as long as the 'unknown network' exists, there seems to be no way to restore internet access (I've tried all the "Troubleshooting" options, including the "Diagnose" option under the "change adapter settings" link), AND there seems to be no way to delete or disconnect from the 'unknown network'. If I reboot again (sometimes 2 or 3 times) the problem goes away. (Until the next shutdown.)

I've FINALLY figured out that I can temporarily fix the problem by disabling the network card in the Device Manager, and then re-enabling it. When I do this, the 'unknown network' disappears and everything works fine.

Anybody know why this happens, or how to solve it? For now it's manageable, but I don't think I should have to disable/reenable my network card every time I reboot.

Thanks,

It JUST HAPPENS when I boot after shutting down. I'm pretty sure it happens everytime I do a complete shutdown. It has happened ever since I got my computer and installed Windows 7 Professional (64bit) on it about 3 months ago. I rarely shut it down, so I don't notice the problem that often.

It might be worth noting that this computer is the only one wired to the router by ethernet. There are 2 other computers in the home connected wirelessly, one using Win7 Home (also 64 bit) and one using XP Pro 32bit. The computer with the problem has some shared folders accessible by the other computers. XP handles networking differently, I think, maybe that has something to do with it?

Got it licked, I think.

Neither of these suggestions worked. But one of the comments on the link posted by chev65 pointed to a solution which seems to have worked:
Fixing connection issues when 0.0.0.0 is set as the default gateway « Life of Heath

The culprit seems to be a service called "Bonjour":

http://lifeofheath.wordpress.com said:

It seems there’s a race condition at startup – which also seems to have gained a boost with Win7 – where if the Apply Bonjour service starts before my NIC retrieves settings from my router, the default gateway 0.0.0.0 is added.

I have no idea what Bonjour is or does, but I disabled it as per lifeofheath's instructions:

http://lifeofheath.wordpress.com said:

1. Click on Start.
2. Type services.msc and press Enter. On Vista you may need to confirm the UAC prompt.
3. Find the Bonjour service. This may be tricky since it’s open source and may not display the same. But you can check suspected services for the typical path “C:\Program Files\Bonjour\mdnsresponder.exe”.
4. Right click on the service and select Properties.
5. Change the Startup type to Disabled.
6. Click the Stop button. You can then close the Services window.
7. Reboot the machine.

As warned, the Bonjour service was tricky to find. On my system it was named "##Id_String2.6844F930_1628_4223_B5CC_5BB94B879762##"

Anyway, the mysterious "unknown network" is gone, and internet access comes online now as it should with every startup or reboot.

Thanks!

kyleknapp said:

Got it licked, I think.

Neither of these suggestions worked. But one of the comments on the link posted by chev65 pointed to a solution which seems to have worked:
Fixing connection issues when 0.0.0.0 is set as the default gateway « Life of Heath

The culprit seems to be a service called "Bonjour":

http://lifeofheath.wordpress.com said:

It seems there’s a race condition at startup – which also seems to have gained a boost with Win7 – where if the Apply Bonjour service starts before my NIC retrieves settings from my router, the default gateway 0.0.0.0 is added.

I have no idea what Bonjour is or does, but I disabled it as per lifeofheath's instructions:

http://lifeofheath.wordpress.com said:

1. Click on Start.
2. Type services.msc and press Enter. On Vista you may need to confirm the UAC prompt.
3. Find the Bonjour service. This may be tricky since it’s open source and may not display the same. But you can check suspected services for the typical path “C:\Program Files\Bonjour\mdnsresponder.exe”.
4. Right click on the service and select Properties.
5. Change the Startup type to Disabled.
6. Click the Stop button. You can then close the Services window.
7. Reboot the machine.

As warned, the Bonjour service was tricky to find. On my system it was named "##Id_String2.6844F930_1628_4223_B5CC_5BB94B879762##"

Anyway, the mysterious "unknown network" is gone, and internet access comes online now as it should with every startup or reboot.

Thanks!

Yes the link you posted above is from the same page I posted, so I'd have to say that the link I posted did in fact serve it's purpose and solved this problem, the Bonjour problem has been around for a long time and is very well known in networking circles.

It's Steve Jobs little gift to Windows systems, I call it corporate sabotage.

[QUOTE=chev65;2144715]

kyleknapp said:

The culprit seems to be a service called "Bonjour":

Oh thank you, I've had this trouble for weeks now and got around to doing something about it. The symptoms were exactly as the first person with the problem.
Help much appreciated.

Because your OS has too many processes and it takes time to start them so network takes long.
two ways:
1: Uninstall some softwares. Make your computer clean and light.
2: Install New OS. I suggest you Windows 7 Ultimate