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Windows 7: No internet access after shutdown, unidentified network appears


24 Feb 2012   #1

Windows 7 Professional 64bit
 
 
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,

My System SpecsSystem Spec
.

24 Feb 2012   #2

Win7 H.Prem. 32bit+SP1
 
 

Hi KK,
How did you get 2 networks to display at the same time ?
My System SpecsSystem Spec
24 Feb 2012   #3

Windows 7 Professional 64bit
 
 

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 Windows 7 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?
My System SpecsSystem Spec
.


25 Feb 2012   #4

Win7 H.Prem. 32bit+SP1
 
 

Check your 'File sharing connections' as in my pdf. If that fails to work, power off your 2 wireless pc's and your router. Open as your image and click 'Change adapter settings' and delete all EXCEPT the LAN. File sharing.pdf


My System SpecsSystem Spec
25 Feb 2012   #5

Windows 7 Ult, Windows 8.1 Pro,
 
 

Quote   Quote: Originally Posted by kyleknapp View Post
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,
You might try using this fix for the Unidentified network problem.
Has to do with a rogue secondary default gateway and it's usually easy to fix.
Windows 7 Unidentified Network, Limited Access, No Internet Connection Problem Resolved
My System SpecsSystem Spec
25 Feb 2012   #6

Windows 7 Professional 64bit
 
 

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":
Quote   Quote: Originally Posted by http://lifeofheath.wordpress.com
It seems there’s a race condition at startup – which also seems to have gained a boost with Windows 7 – 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:
Quote   Quote: Originally Posted by http://lifeofheath.wordpress.com
  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!
My System SpecsSystem Spec
20 Oct 2012   #7

 

I'm experiencing this on a freshly installed windows 8.I couldn't find any bonjour service.
Any other solutions?
My System SpecsSystem Spec
21 Oct 2012   #8

Windows 7 Ult, Windows 8.1 Pro,
 
 

Quote   Quote: Originally Posted by kyleknapp View Post
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":
Quote   Quote: Originally Posted by http://lifeofheath.wordpress.com
It seems there’s a race condition at startup – which also seems to have gained a boost with Windows 7 – 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:







Quote   Quote: Originally Posted by http://lifeofheath.wordpress.com
  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.
My System SpecsSystem Spec
24 Oct 2012   #9

Widows 7 Home Premium 64 bit
 
 

[QUOTE=chev65;2144715]
Quote   Quote: Originally Posted by kyleknapp View Post

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.
My System SpecsSystem Spec
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 No internet access after shutdown, unidentified network appears




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