Why can I not access certain web sites?

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I have tried everything that's been put above. I can use some eBay pages, but then after a few, it will says "Page Contains No Data" (FireFox) or "Page cannot be displayed" (Internet Explorer).
This seems to be a huge problem across the net, loads of people are complaining of it. Where has it sprung from? And please please how do I fix it?!

hi

Am a kid and i love to play runescape.but my Brother Block all the computers from even showing the web page www.runescape.com i think he use a cheap blocker on line.But when i Deleate the block and retry and them restart my computer it still did not work.....

help me please all the computer expert out there.i pay membersship fee from my own money.

please help
help

plese send to help to dernessa19@yahoo.com

I have 2 98SE machines & one XP Pro. All connect to the internet via a wireless access point & have Linksys USB wireless adapters. 802.11G on the XP, and Bs on the 98SE machines. One of the 98SEs has problems connecting to several sites, including Adobe. After poking around in the registry trying to reconfigure per Ronnie's advice I had to give up. Nothing seemed to match what was written about. I eventually did a speed check at 2wire.com with both the 98SEs. I found the one that had problems was much quicker (out of spec?) than the other. On a hunch, I swaped adapters between machines, and the troubles traveled with the fast adapter! I tried the .11G on one of the 98SEs, but it refuses to play nice. I'm going to replace both Bs with Motorola Gs. I hear they work where the Linksys won't on 98SE boxes.

i know i have a few viruses, but i am not sure what is causing this problem.. some websites will not let me access them, it says that it just doesn't exsist.. i am talking about yahoo.com, ikea.com, jokes.com... etc, what do you think?

If you know you have a few viruses I would first get and run an up-to-date anti-virus program. All bets are off as long as you have viruses on your machine.

http://www.webisolutions.com WEBSITE can any one help me why not able to see

Many thanks.

I worked through the above suggestions and found that the hosts file was the problem.

The site suggests malware. However in my case (and maybe others, hence posting this response) one specific recent cause is the W32.Mytob.GP@mm virus. This may have got to some people's PCs because it appeared between Norton's weekly automatic downloads towards the end of June (they should have sent out a special update - I knew something was wrong so got the daily download which instantly found the virus) As part of the damage it appends many entries to the hosts file (see below). I followed Norton's instructions and removed all the security-related website references (mcafee etc) However, not understanding what was going on I assumed the end ones such as Amazon and paypal belonged there because I use them regularly. Wrong!! I have since removed those last few and I have my internet access back to normal. That'll teach me!
Quote from Norton:

"Blocks access to several security-related Web sites by appending the following text to the hosts file:

127.0.0.1 www.symantec.com
127.0.0.1 securityresponse.symantec.com
127.0.0.1 symantec.com
127.0.0.1 www.sophos.com
127.0.0.1 sophos.com
127.0.0.1 www.mcafee.com
127.0.0.1 mcafee.com
127.0.0.1 liveupdate.symantecliveupdate.com
127.0.0.1 www.viruslist.com
127.0.0.1 viruslist.com
127.0.0.1 viruslist.com
127.0.0.1 f-secure.com
127.0.0.1 www.f-secure.com
127.0.0.1 kaspersky.com
127.0.0.1 kaspersky-labs.com
127.0.0.1 www.avp.com
127.0.0.1 www.kaspersky.com
127.0.0.1 avp.com
127.0.0.1 www.networkassociates.com
127.0.0.1 networkassociates.com
127.0.0.1 www.ca.com
127.0.0.1 ca.com
127.0.0.1 mast.mcafee.com
127.0.0.1 my-etrust.com
127.0.0.1 www.my-etrust.com
127.0.0.1 download.mcafee.com
127.0.0.1 dispatch.mcafee.com
127.0.0.1 secure.nai.com
127.0.0.1 nai.com
127.0.0.1 www.nai.com
127.0.0.1 update.symantec.com
127.0.0.1 updates.symantec.com
127.0.0.1 us.mcafee.com
127.0.0.1 liveupdate.symantec.com
127.0.0.1 customer.symantec.com
127.0.0.1 rads.mcafee.com
127.0.0.1 trendmicro.com
127.0.0.1 pandasoftware.com
127.0.0.1 www.pandasoftware.com
127.0.0.1 www.trendmicro.com
127.0.0.1 www.grisoft.com
127.0.0.1 www.microsoft.com
127.0.0.1 microsoft.com
127.0.0.1 www.virustotal.com
127.0.0.1 virustotal.com
127.0.0.1 www.amazon.com
127.0.0.1 www.amazon.co.uk
127.0.0.1 www.amazon.ca
127.0.0.1 www.amazon.fr
127.0.0.1 www.paypal.com
127.0.0.1 paypal.com
127.0.0.1 moneybookers.com
127.0.0.1 www.moneybookers.com
127.0.0.1 www.ebay.com
127.0.0.1 ebay.com
"

I had the same problem.

My solution was to open the hosts file found in c:\windows\system32\driver\etc\ and there was a list of all the sites I couldn't access.

To open the file double click it and then check the button that allows you to choose the programme to open it in. Select notepad.

Delete all the lines showing the websites you want to access and then save it and Hey Presto!

Changing the MTU settings as mentioned above does work for some sites you cannot access as I had to do this when I set up my router.

Hi everyone, seems like I'm having exactly the same problem with a PC I'm trying to sort at the moment.

Have tried the methods suggested above and still no joy BUT I feel the MTU solution is the one.

My problem I think, is that I do not know which network adaptor is the primary due to the fact none of them seem to have an IP address listed.

Any ideas how I can find out which adaptor is the primary.

I did try adding the MTU Dword to all the interfaces, but still no change.

Any ideas ?

The DWORD will work, but you need to make sure its the correct one you change...

trust me, there are so many forums with the sollution on that ronnie created a few pages back and its all success.

I tried his idea first and didnt work... i kept it untill i got the correct value and thank GOD its now working... dont give up, keep trying

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