There is a wonderful and definitive article on this subject here:
http://www.dslreports.com/faq/tweaks/4._MTU

My problem turned out to be a nasty piece of spyware which Norton couldn't see but I downloaded spybot and it cleared it up nicely.

NOOO WAAYYYY!!!!, this MTU stuff actually works damn fine!!, it's 100% legit!!, here's the situation, a few days ago I went to a website that I visit frequently and I never had any problems loading that website EVER, until a few days ago, I just use to type in the URL of the website and it would come up like almost instant (just a few seconds maybe on a bad day lol) but before now starting a few days ago the damn thing was taking forever to load and when the load does complete all I got was a firefox message telling me "The Connection To the Server Was Reset While The Page Was loading" or if you're using Internet Explorer "Page Cannot be Displayed" GOSH!!,:

so all along here I was thinking it was just this particular website since most other websites "seemed" to have been working just fine, that is until I checked Microsoft.com!!! , the same thing happened over there too so instantly I came to they conclusion that maybe everything is not as fine as I think it is , infact I may just have this problem with yet another website that i may know all to well so what I did was go back to some of the websites that I had bookmarked and some popular ones to see if some may exhibit the same problem and low and be hold I did infact encounter this page loading problem with some websites that use to work excellent and gave absolutely no trouble so right there and then I knew there must be a problem with either my computer or my internet connection settings , you know things to do with my computer and my internet specifically, something that I just don't know about and hadn't' encountered before.

I did a search "Can't Load/access Microsoft.com" or something like that and came across this website read what I saw about MTU settings then went to do a little bit of research on that(to tell you the truth I found some information on the MTU issue a couple of times before but none where quite specific to the point of a solution) and came across this site
"http://www.dslreports.com/faq/5793" and on the example of the MTU and Ping testing/solving etc they got it explained pretty clear! , so I started following the steps mentioned in their examples and as it turned out my MTU was set too high and it was just a metter of me tweaking my MTU settings from about 1472 or 1500 to 1464!! and that worked for me.

I went to the Microsoft site and it's loading smoothly also went to the other sites I was having this issue with also and they now are working as they should, to tell you the truth I would have had this MTU stuff fixed earlier if I hadn't overlooked it and regarded it as "irrelevant" lol, I absolutely did not think that this MTU stuff was my problem, those same website worked with the same modem i'm using with the same "NOW" "problematic settings" it had before I edited the MTU stuff , so i really had no reason to believe it was my modem/ "Ethernet" modem that was the problem in fact before I thought it was a problem with my internet connection I actually though it was a problem with that one websites server lol that is until obviously when I encountered the problem on other previously working websites.

I guess this happened as the result of some abrupt computer malfunctioning that occurred with my PC a few days ago which forced me to reinstall windows XP and my DSL

Hi all,

I have the exact same problem as the original poster of this thread. However, I am a complete amateur when it comes to the complexities of computers, so I would be very much appreciative if someone could perhaps try to explain a solution to this problem which I could either follow or perhaps give to somone more knowledgable to follow.

Many thanks.

i got this same problem nd i simply restart DNS client (Service)...nd it works

i have the same problem , but after setting MTU=1500 in PC and MTU=1500 in Firewall (SOnicwall). We get no change .
any one can help me
thanks in advance

Hi,

I'm also looking for an answer to the same question.

I have installed Windows XP SP2 on a Dell Optiplex 745, I am unabe to download Windows Updates and even cannot access any microsoft website.

But can access any other website i.e howstuffworks, google, yahoo .... etc..

It is a virus that's giving you the problem.

You can remove it by going to http://safety.live.com

there you find a scanner from Microsoft which will remove it.

ALSO: Take notice to your modem or dsl activity, as it will constantly be sending and receiving info to the source of the infection.

Good Luck, Ed

Satsriakal!!
Just click on Start --> Run --> Type services.msc. Find DNS client , right click on it and stop it. You will be able to access the blocked sites of microsoft.

Hello HEYBETS30

I am Brazilian and my friends here in Brazil had the same problem yours, I see that I can solve your case (I have several solutions to this problem, I put one that I deleted your need, but if my hint does not work I put other, OK). I'm sorry if you could not read what is written, correctly, that I use google translator service, as it is not efficient .......... kkkkkkkkkk! !!!!! More that's not the case.


We go:

1 Click the Start menu.

2 * Search for the word RUN, thinking gave a click

3 * Type this command SERVICES.MSC

That done, you search the word CUSTOMER DNS, finding one you click with right mouse button on top, and then switch to OFF.
Now search for the word Web client, which is just above the client dns after is repeat the same procedure as quoted anteriomente.Espero you solved this problem here, if you want to believe that it is global.

If, just remember if you can not solve with this trick, post your comment, I'll be here with several others. But if I decide not forget to thank me ............. KKKKKKKKKK