I don't know if anyone else has had this problem???

I know many have because it's all over the net and the fixes are outrageous :x

Well after several days of messing around I might have found something :hail:

The Story:

One day you can go to a website everything seems fine then somewhere along the line this website you've gone to several times just won't come up now :x

You go to it and about 5 minutes later you receive the dreaded DNS page but yet you use someone elses computer and it works perfectly fine??? :x :x

Now I know this has happened and happens all the time - This little thing has been driving me nuts for months if not years :knife:

Here is the situation:

I have Windows XP SP1 and 2 and Windows 2003 Server and no matter what. I could not get any of these to go to http://www.winzip.com or http://www.roxio.com - funny part is as soon as one doesn't work I know for a fact for me the other will not :x

Now the real kicker is I have Mozilla's latest installed on my XP machines and guess what it CAN'T go to either of these also - my default though is IE 6 it doesn't work either...

Now let me go over to my 98 machine or my Linux machine and guess what they pop right up no problems... - IE6 -98 and Mozilla's latest (Linux).

Ok so I've tried everything known to man and anything EVER posted on the internet and this is NO JOKE!!! :finger:

So tonight I'm like I have an idea - I tried many things and thought I found it by un-installing a Critical update from Microsoft but forgot that I had edited some registry settings before hand. After reboot everything worked :hmm:

So it was working now on my XP machines but I tried on my 2003 machine but of course did no registry settings and I couldn't get it to work...

So I then remembered what I had done and I had two registry patches I downloaded years ago and ran it on the 2003 machine and BINGO now it was working... These were patches for DEFAULT TCP/ PARAMETERS and one for TWEAKED TCP/PARAMETERS... The TWEAKED one had settings TOO HIGH...

THE CURE FOR REAL THIS TIME:

I go and download this great little application http://www.speedguide.net/downloads.php and download the TCP Optimizer and run and pick Optimal Settings and Rebooted to let take effect.

THE SITES ARE COMING UP FINE!!!

Some how if you mess with settings in your registry for TCP/Parameters or use other tweaking programs etc. this can cause pages not to come up - Very weird I might add... :roll:

If your TCP/Recieve Window or GlobalMTU etc. are set too high or too low depending on your connection can cause pages to not be displayed.

Causing that dreaded DNS page cannot be displayed... We've all seen this before - Don't get me wrong there are plenty of other reasons but this is for my problem I was seeing and I know others have as well...

For anyone that read this previously SORRY!!! :oops:

Let me finish with - that about a month ago these sites were working and then about 2 weeks ago they stopped again and this has happened on and off for about 2 years :x

I just hope this post can be a CURE ALL for all those people on the net that have tried everything as I did for months, years and contacts with ISP and re-installs of XP and IE 6 and registering DLL's and SO ON!!! :finger: :finger:

But at least now I know that I can do this until I hit the nail on the head - you can choose custom settings also it's a great little program for FREE...

PS> I was able to use the EXTREME settings on my CABLE connection and everything is still working fine and believe me what a speed increase from the default...

Found the REAL Culprit...

I was actually wrong with my original post :oops:

For whatever reason I forgot I messed with other options before I rebooted and THOUGHT that by removing patches was what caused it to start working...

SORRY!!!

The real reason is TCP Parameters within the registry is what is causing the problems...

RE - READ my original POST I edited it with great news and something much simpler...

I do appologize for the original post - I should have checked deeper before posting - The original is EDITED and VERY CORRECT now :hail:

I wrote this SECOND POST for the 20 some people that READ what I posted originally for those reading the First post (NOW) it has BEEN EDITED with the PROPER FINDINGS - ENJOY :beer:

looks nice.
i never had that problem in any operating system that wasnt the result of a server that was actually down or if my inet connection was a bit dodgy.

when you got a tweked internet connection your MTU should be 1492 (max 1500) this makes some trouble in very very few cases like roxio above ... set it to 1472 and try again ...
BeFaster is a very good util to optimize connection or/and set every value by hand

It was the TCPWindowSize or something like that...

I tweaked it by the proper increments but had is set to an outrageous number it was a HEX number of 3fffffff...

I had this setting for both the windows size and globalmax because these two should be set the same and this was what was causing those two sites to not come up... Also what was wierd was the sites use JHTML - not sure if that adds to it or not???

I'm currently using the EXTREME setting I mentioned with that application in my original post which sets the MTU to 1500 and everything is still fine it all came down to those other two settings...

So I'm wondering what causes that setting to change if it's not touched manually or with a tweaking program etc.???

Of course when people receive that page they should check the obvious which is neither of these mentioned first...

It's so weird that it can come down to such a setting to report that ERROR Page - which most people would think it was a bad TCP stack or DNS problem - Network related (Server, ISP, NIC, TCP/IP) - I'm sure others have seen all those other remedies for WEB PAGES NOT BEING DISPLAYED... Not a single one I have read or seen over the years ever mentioned the two settings I mentioned here...

By no means am I saying EUREKA!!! LOL...

All it would take is this setting to be not properly set for the connection DIALUP, DSL, CABLE, LAN which are all different and then people would not be able to get to certain sites because of it... TOO LOW OR TOO HIGH... There is a happy medium for each - it's just finding it... The program you mentioned and the one I mentioned are the KEY>>>

Before you go through all that headache the next time, you might also try typing in "ipconfig /flushdns" (sans quotes) at the command prompt or from the run dialog box. Windows 2000 and XP have a nasty habit of caching dns entries and consequently if you happen to visit a page that really can't be displayed at the time it will cache it for a short period of time before it flushes the cache automatically. Therefore you will continue to get the Page Can't be Displayed Error even though you know it is up and running. And I will file the Tweaked RWIN and MTU settings in case I run into that and the command line doesn't work.

Yes I have...

Unfortunately I work in the IT field and have for 10 years and I've done all of the obvious...

That's why I made this post...

And mentioned that about EVERYTHING!!! - DNS, TCP/IP, Network, all the things that most think would cause such a problem...

But once all the obvious have been checked THIS IS THE CULPRIT...

And obviously this isn't something that is OBVIOUS for such an ERROR PAGE...

Is

wonder

if

you

could

stop

this ?!


ipconfig /flushdns works fine ... can get access to roxio again ... had no problems with winzip and roxio seem to be the only page here which had this problem....

I am a new linux user in a new home with a new ISP (fiber optic) in Japan.

I have the same probelm and wonder if the solutions outlined above will work....I have heard it can be caused by where you are in the world....and the sityes I cannot visit are from the same host

redacorn.org
tokyoprogressive.org.uk

I have not had the problem from other locations on other computers.....

I have gotten around the problem using a proxy server, as in

http://www.anonymouse.ws/cgi-bin/anon-ww...ive.org.uk


If it is an ISP or location-related problem, I will need to ask my ISP.

I have a problem explaining this to my Japanese ISP because of the langauge probelkm, but will be able to if someone suggests what to ask.


If it can be solved in Linux (no matter what Browser I use so far I have the problem), I can try to follow instructions..... I am still learning.


Thanks in advance.

paul

paul@tokyoprogressive.org

Please help, I am having the same problem . I can go to some websites but not for some others. I dl the TCP Optimizer , run it and it have not helped me yet. Can somebody help me? This is really frustrating.......

post you connection ... tried other browsers ?
tried http://www.ekremdeniz.com/ Befaster ? 15day trial ..