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Can't access some internet sites, Windows 7

This is a discussion on Can't access some internet sites, Windows 7 within the Networking Support forums, part of the Tech Support Forum category. Hi, I've recently bought a new Windows 7 PC (version 6.1) and now I cannot access some websites. I'm using


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Old 04-06-2010, 04:36 AM   #1
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Hi,
I've recently bought a new Windows 7 PC (version 6.1) and now I cannot access some websites. I'm using the same modem/wireless router and there seems to be no connection between the sites I can't access, Microsoft Support is one of the ones I can't access! I'm running IE 8 (version 8.0)

I'm using McAfee's Security Centre and have turned this and the firewall off to no effect. It makes no difference if I'm using a cable or wireless connection.

I seem to remember having a similar problem a few years ago and sorted it using Dr. TCP's utility, but I understand this won't work with Windows 7.

Anyone got any ideas? It's pretty maddening!

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Old 04-06-2010, 11:49 AM   #2
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Hello and welcome to TSF!

Please completely disable your security software and for now do a direct or wired connection to your router. Any other computers in your wireless network that experiencing the same issue?

Also, please provide an ipconfig /all of your computer.
Click on Start => in Quick search and type the word cmd on the blank field. From the black screen, type the word ipconfig /all and press enter. Right click on the black screen or Command prompt then choose Select All and Paste the results here.

Please post update.

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Old 04-06-2010, 01:24 PM   #3
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Thanks for the welcome and help 2xgrump!
I've another laptop running XP on the wireless network and it works fine and my iPhone works OK when in Wi-Fi mode.
I've disabled all the McAfee Security centre, here is the ipconfig /all results

Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\Home>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Garvey-Work
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : Belkin

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . : Belkin
Description . . . . . . . . . . . : HP 802.11b/g Wireless Network Adapter
Physical Address. . . . . . . . . : 00-C0-A8-B8-96-ED
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::65b8:c1ec:46f9:a9dd%13(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.2.4(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 06 April 2010 15:52:47
Lease Expires . . . . . . . . . . : 06 April 2011 16:03:45
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DHCPv6 IAID . . . . . . . . . . . : 318816424
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-12-CD-A2-AB-00-25-64-AE-D3-B3

DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : Belkin
Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet
Physical Address. . . . . . . . . : 00-25-64-AE-D3-B3
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.Belkin:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : Belkin
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 9:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:73ba:1833:a01:a294:b86f(Prefe
rred)
Link-local IPv6 Address . . . . . : fe80::1833:a01:a294:b86f%12(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled
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Old 04-06-2010, 01:30 PM   #4
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You're showing all good working IP's.

Let's troubleshoot:

Please reset IE8

Scan your computer for any Malware/Spyware using Malwarebytes.

Disable IPV6.

Please post update after.
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Old 04-07-2010, 09:18 AM   #5
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No luck on all those 3 2xgrump.
I actually couldn't access any of those pages from the PC so had to get to them from the laptop and email myself directions and/or downloads!

IE8 is reset, including passwords etc.
IPV6 is disabled, Local Area Connections Properties show TCP/IPv6 as unchecked even after reboot.
Full scan from Malwarebytes shows no infections :-

Malwarebytes' Anti-Malware 1.45
www.malwarebytes.org

Database version: 3963

Windows 6.1.7600
Internet Explorer 8.0.7600.16385

07/04/2010 15:33:43
mbam-log-2010-04-07 (15-33-43).txt

Scan type: Full scan (C:\|E:\|)
Objects scanned: 364272
Time elapsed: 2 hour(s), 5 minute(s), 27 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)


Any other ideas as to what it could possibly be?
Thanks again,
Simon
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Old 04-07-2010, 09:28 AM   #6
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Try changing your DNS's to these Public DNS's, click here with full guide as well.

Test your connections after.
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Old 04-07-2010, 09:52 AM   #7
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Hi 2xgrump,
No change when using Google's Public DNS'
I've changed TCP/IPv4 properties to 8.8.8.8 & 8.8.8.4 and I can still access all the sites I could before but not the ones I've problems with.
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Old 04-12-2010, 04:44 AM   #8
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Any other ideas on this on 2xgrump?
I know you're busy but would greatly appreciate anything else you can offer to solve this.
Thanks
Simon
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Old 04-12-2010, 09:52 AM   #9
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Restart your computer, Tap F8 and select Safe Mode with Networking and see if you can access those websites.

Have you also tried other browsers such as Firefox or Chrome?
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Old 04-13-2010, 09:16 AM   #10
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Hi 2xgrump,
Thanks for the answers, finally got it sorted!
It was the same problem on all browsers and also in Safe mode with Networking.
I then set MTU from 1400 to 1492 (the max) and now I can access all sites again

Thanks again for the help.
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Old 04-13-2010, 10:01 AM   #11
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Quote:
Originally Posted by Simon1000 View Post
Hi 2xgrump,
Thanks for the answers, finally got it sorted!
It was the same problem on all browsers and also in Safe mode with Networking.
I then set MTU from 1400 to 1492 (the max) and now I can access all sites again

Thanks again for the help.
Glad that your issue is now resolved.
Appreciate the update and You're Welcome!

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