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Can ony reach a few websits

over the last few days i have noticed that i have not been able to reach some websites. i put this down to the websites themselves having problems. to day i checked this on another computer on the same network and found i could reach them on this computer.

i tried on my computer to clear dns cache and rebooted my system, i now can reach even less, but still able to reach some.

i dont know where to start to sort this problem out, can anyone out there help please
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QuinnDex
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QuinnDex
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6 Solutions
 
mharvee18Commented:
have you tried using a different internet browser? i had some issues with internet explorer but switching to chrome or opera did the trick for me
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rjanowskyCommented:
Have a look at the local hosts file. Normally it's under

C:\Windows\system32\drivers\etc

Some malware make a lot of entries into this file to block access to legitimate websites like AV vendors and so on.
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Ram BalachandranCommented:
There are few things you need to verify,

1) check if any antivirus / internet scanner tools are blocking those sites
2) upgrade the internet explorer and install lastest patches
3) install chrome or any other browsers and try browsing to ensure there is nothing to do with network or computer related issues
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jcimarronCommented:
QuinnDex--
Run a System Restore to a time before the problem started.

Have you scanned for viruses and other malware?
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QuinnDexAuthor Commented:
@mharvee18 yes i have, even installed chrome (that i never use) same results

@rjanowsky.. Yes tried that too, nothing there except local host info and that is correct

@ram_kerala have disabled all firewalls and AV same result, already tried other browsers including chrome, all updates applied.

@jcimarron. yes i have scanned for virus's system restore isnt an option as i havent set a restore point... has never worked for me on xp in the past anyway.. always get the message that restore isnt possible

its definatly a computer issue as all other computers at home connecting through the same network have no problems
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jcimarronCommented:
QuinnDex--
Run Internet Explorer with no add-ons.  (Start|All Programs|Accessories|System Tools|Internet Explorer (No add-ons)

If you can reach all sites, then you must determine which add-on which is the problem.  IE Tools|Manage Add-ons|Disable add-ons one by one until the problem is gone.
The Skype add-on is often the culprit.

Are you running any third party toolbars?  If so, uninstall.
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QuinnDexAuthor Commented:
@jcimarron i usually use firefox, ie has no addons, neither does chrome, i have disabled all addons for FF, i dont use third party toolbars
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QuinnDexAuthor Commented:
New information, i can get to websites by leaving off www.

eg, if i go to experts-exchange.com i get to the website, it then redirects me to www.experts-exchange.com and i get server not found, looking at my logs though it seems that the request isnt leaving my computer
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Nice-GhazaCommented:
Dear , Can you check  the Other computer On same Website. is open.
Check the IP Address Gateway ,DNS  Setting is it fine,
Please router/modem  and switch restart only
Thnks
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QuinnDexAuthor Commented:
@Nice-Ghaza other computers on the network are unaffected, i have restarted router reneweddns renewedip and flusheddns
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Nice-GhazaCommented:
Dear ,
          Please  create the   New User Account and see it i think so After that fine Thanks
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QuinnDexAuthor Commented:
no creating a new account hasnt fixed the issue, still the same problem in the new account
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QuinnDexAuthor Commented:
i can reach https websites with or without the www. infront of the URL but not any http websites that start with www.

is there a file in XP that maps the www. part of a URL that may have been corrupted?

Also i cant reach subdomain websites on http,

trying to analyse this i keep thinking i have something malicious on my system using regex to match urls fitting http:// something.something.something
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QuinnDexAuthor Commented:
Thank you everyone for you help. i have found the problem, i phoned my AV provider who helped me get to the bottom of it.

it seems my dns isnt getting recognised by my rooter when the url is starting with www. so isnt getting sent, i have reset my dns server to 8.8.8.8 which is a google service and everything is working
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jcimarronCommented:
QuinnDex--Thanks for telling us the solution.
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Nice-GhazaCommented:
Dear ,
              Check the IP Address Gateway ,DNS  Setting is it fine

i have restarted router reneweddns renewedip and flusheddns
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QuinnDexAuthor Commented:
it seems my dns isnt getting recognised by my rooter when the url is starting with www. so isnt getting sent, i have reset my dns server to 8.8.8.8 which is a free google service and everything is working
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