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11.19.2008 at 01:30PM PST, ID: 23919621
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7.8
Zones:

Windows Networking, Domain Name Service (DNS), Network Management

Tags:

Microsoft, Windows, XP SP3
Hello-

I am experiencing a networking problem on a small network.

I have five PCs on a peer to peer network. All PCs are running WinXP Pro SP3. Everything was running fine until recently when two of the five PCs are not able to get to certain websites.

These two users will receive error "Internet Explorer cannot display the webpage" when trying to access certain pages using IE7. If they try using Firefox, they are presented with the error "Address Not Found". If they use Google Chrome, they receive "This webpage is not available."

Webpages that they can NEVER access include mapquest.com, support.microsoft.com, my.yahoo.com, among others.

Webpages they can ALWAYS access include cnn.com, google.com, among others.

The other three users in the network have no problems accessing any webpages.

I have been focusing my efforts on one PC, thinking that the other PCs problem will be related.

I have tried flushing the DNS cache using "ipconfig /flushdns"

I have uninstalled all security software, all IE toolbars, and turned off Windows Firewall.

I have performed a brief scan with malwarebytes (no noteworthy results).

I have (obviously) tried multiple web browsers.

One thing I did notice that was out of place was that the command "ipconfig /all" returned a result saying "Node Type: Unknown". (This happened on both computers.) I corrected this on the one PC by adding the following keys to the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NetBT\Parameters
EnableProxy = 0
NodeType = 1
The fact that these two keys were missing seems significant, but now that ipconfig reports "Node Type: Broadcast" and I still receive the same results, I'm not sure how this fits.

I am at a loss about how to continue, but beyond that, I'm not sure what to even search for. All search strings I use seem to point me in completely the wrong direction (i.e. completely non-functioning DNS, ISP down, etc).

Suggestions will be appreciated. I am thinking of performing an OS reload on these two PCs, even though I think there must be a way to resolve this without that measure.

Thanks.
 
Expert Comment by Delphineous:

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Author Comment by ctsmequon:

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Administrative Comment by Cyclops3590:

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Accepted Solution by ee_auto:

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20081119-EE-VQP-46 - Hierarchy / EE_QW_2_20070628