DOCUMENT:Q187856  10-AUG-2001  [iis]
TITLE   :Limit SSL Message Size to 16 KB for Netscape
PRODUCT :Internet Information Server
PROD/VER:winnt:3.0,4.0
OPER/SYS:
KEYWORDS:kbWinNT400sp4fix

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The information in this article applies to:

 - Microsoft Internet Information Server 3.0 
 - Microsoft BackOffice Server 4.0 
 - Microsoft Windows NT Server version 4.0 
 - Microsoft Windows NT Server, Enterprise Edition version 4.0 
 - Microsoft Windows NT Server version 4.0, Terminal Server Edition 
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SYMPTOMS
========

When you try to make a secure connection to ASP files that are over 32 KB with
Netscape, the following error message occurs:

   An I/O Error occurred during security authorization. Please try connection
   again.

CAUSE
=====

The SSL limit, as defined in the SSL specifications, is a maximum of 16 KB of
data in one block.

The problem occurs when the IIS 3.0 computer sends the Netscape client more than
16 KB at one time (in one block of data).

Internet Explorer accepts up to a 32 KB block of data at one time.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or
Windows NT Server 4.0, Terminal Server Edition. For additional information,
please see the following article in the Microsoft Knowledge Base:

   Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack


STATUS
======

Microsoft has confirmed this to be a problem in Windows NT 4.0 and Windows NT
Server 4.0, Terminal Server Edition. This problem was first corrected in Windows
NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition
Service Pack 4.

Additional query words: Secure Sockets Layer https web page

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Keywords          : kbWinNT400sp4fix 
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400 kbWinNTS400search kbWinNTS400 kbNTTermServ400 kbNTTermServSearch kbiisSearch kbAudDeveloper kbBackOfficeSearch kbiis300 kbBackOfficeServ400
Version           : winnt:3.0,4.0
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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