I can't access some websites ... why?

If I could plant a big 'ole sloppy kiss on ya Leo, I would! Thanks so much for this ingenious information. I'm so glad I Googled my problem and found this site. You're awesome!

I tried the MTU settings and like another fellow I have no numbers as well using XP Home Edition on your basic cable hook up. No router. The only site I can not get on is the most recognizable site out there...google! Anything to do with google and I won't be able to get on. I've changed my search engine to Alltheweb.com for this reason and just lead my life without google. Any help would be appreciated. Thanks

I had to use another computer to down load DrTCP and transfer it to my computer with this same problem ... it did NOT fix the problem.

SOmething else is wrong. Whatever it is - it is pretty smart ... I cannot download windows updates, virus scan software ... those websites do NOT work or gets stuck after a while ...

I tried web based scanners (from the websites that I can access) - nothing comes up after several hours of scanning.

this computer with problem has

Windows XP Professional SP2
Websites like Yahoo, Google do NOT work few others (www.msn.com) work fine
I have been trying to fix this problem for the last 7 days about 40-50 hours spent so far.
I am not totally computer illiterate ...

Other machines (laptops) work fine through the same ISP and router!

Couple of experts I spoke with in my town said they had similar problems and ended up reinstalling Windows and starting all over again with their machines that are taken over by this demon, whatever it is.

Additinal Info:

I started my computer in SafeMode -- ie SafeMode+Networking mode -- and the websites that did not work before seem to work now -- so whatever the problem is getting kicked in only when we start the windows in full mode.

For people who don't know how to start SafeMode -- start hitting F8 key while your system is booting up like crazy -- it will take you to a screen where you can use up and down arrow keys to select SafeMode with Networking. If you start just SafeMode (without the Networking loaded) then you cannot access anything outside your own computer - no internet, no other computers.

Hey Guys,
Just Wanna let you know I was able to Resolve the problem.

I tried Turning Off the Hosts File via CMD and the site worked, so I went ahead and opened the Hosts file with notepad and search for the the website I was trying to access.

For some Weird Reason, it was added to the block list with an loop Ip to resolve on.

Cheers.
Alex

Yes! This worked perfectly. For some reason, all of the domains I own (which are all hosted from the same IP) went dark for me. I couldn't see a single one, but everyone else in the world can. So, I did the instructions above, however, my MTU had nothing in the box, so I entered 1500 and presto! I could see all of my sites again.

Thanks!

I have AT&T Wireless broadband on my laptop and I can't bring up the www.hotmail.com sign in page all of a sudden today; yet, I can on my iPhone. Is this a provider issue, hotmail issue, hurricane issue (I'm in south Texas) or something else? I can get on every other site out there.

I bought a new Belkin Router this morning. It has taken 4 hours to set it up. I have been phoning Belkin and my broadband provider. I managed to get onto the internet in the end. But no Hotmail or Yahoo. Just want to say thank you for the advise on this page because it worked for me.

The Belkin MTU was set at 1439. I changed it to 1492 and it now works. Thanks

I tried to download DRTCP, however, I just got message "THE WEBSITE DECLINED TO SHOW THIS WEBPAGE" HTTP 403. Obvious there is something that I should be doing and as I am not quite illiterate with PC's, there is still alot to learn. Any suggestions to rectify the situation.

I am unable to access sites through search engines, Yahoo, Google, etc. but can access any sites I have bookmarked including any any links from them. I can also sometimes access them if I type the address in the URL. I did a system restore and all was ok for a few days, but the problem returned and doesn`t always correct itself after a restore. I tried swapping the computer over and found the same problem. I would be grateful for any halp.