Server returned extended information

I am using IE 4.0.  On some sites I receive the error message that IE
cannot open the site "The server returned extended information."  What
does this mean and how do I correct it?  
KubaAsked:
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psarodeCommented:

Assumption ---YOU ARE FAMILAR WITH HTTP protocols and  http servers and some middleware technologies.

Hi Kuba,
Well U get this error on some ,specific sites, even  using IE3.0.

Well I think the problem is not at UR end . Its just that the web server at those sites are returning some information which UR browser is incable of handling.

The information may be some web server specific error header returned by the web server to u r browser.Error may be caused when u click a link leading to some faulty cgi program or some other problem(may due to some middle ware dll error)

The example to this is MS-Internet Information Server 3.0.
It returns some headers which are not a part of standard HTTP protocol. So the other browser which do not understand it either ignore it or they fire some error to the user.

Example ,MS IIS sends one header as follows
"WWW-Athutenticate-NT".
This is a non standard http header returned by the server (IIS3.0).

So what I suggest the following:
1> If  U get the same error on accessing a web server, to which U have access and control, FIND

 a> What is the link UR clicking ?Does it invoke any cgi program?Does it invoke some Server side DLLs?e.g(a livewire program or Active Server page on IIS or a Serverlet on a Jeeves web server.

b>You could check the log files on the web server about the action taken by the server on clicking link which is giving problem(in the browser).
This is one way to understand why U get that error.

2>If U donot have access to the web server. (for Internet sites which give U this error).

a>Open a Telnet session on the web server (find IP address by pinging to site and latter open telnet session on that server at port 80).

b>type in the http request which gives U the problem.
e.g GET /index.html HTTP 1.0

c> See the response send by the server. This could give U some Important clues.

Thats it from me. I hope that U can get through this problem.
If not tell me the exact url which give U the problem.

regards
psarode (TTSL - Barbados)
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KubaAuthor Commented:
The site is actuallt a ftp site.  I have been abel to successfully access the site by accessing the main directory of the site and then working through the directories to where I wnated to be.  I was accessing with IE 3.0.  DOn't know if a site change or IE 4 is the culprit but my "backdoor" method is only a couple of seconds longer than going direct.
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