Microsoft Internet Explorer 6 Public Preview Release Notes

----------------------------------------------
README for
Microsoft Internet Explorer 6 Public Preview
February 2001
----------------------------------------------

(c) Copyright Microsoft Corporation 2001. All rights reserved.


This document provides complementary or late-breaking information 
to supplement the Microsoft Windows Internet Explorer and Internet 
Tools documentation. You may also view the Microsoft Web site at 
http://www.microsoft.com/ for the latest information.

If you are looking for information about a specific program or 
component, try searching for it in the Microsoft Knowledge Base 
at http://support.microsoft.com/. System requirements are listed 
in the IE.txt file, which is in the Internet Explorer folder in 
the Program Files folder.


------------------------
HOW TO USE THIS DOCUMENT
------------------------

To view Internet Explorer's Readme.txt on-screen in Notepad, 
maximize the Notepad window.

To print Readme.txt, open it in Notepad or another word 
processor, and then use the Print command on the File menu.


========
CONTENTS
========

SYSTEM REQUIREMENTS
Disk Space Requirements for Internet Explorer 6 Public Preview 
Installation
SETUP
Installing Internet Explorer 6 Public Preview
Running Internet Explorer 6 Public Preview on Microsoft Windows NT 
4.0
Installing Windows NT 4.0 Service Packs over Internet Explorer 6 
Public Preview
Uninstalling Windows NT 4.0 Service Pack 6a with Internet Explorer 6 
Public Preview installed
Installing over Windows 2000 Releases
Uninstalling Internet Explorer 6 Public Preview Before upgrading to 
Windows 2000
Downloading Internet Explorer 6 Public Preview using a Third-party 
Download Manager
High Encryption Support for Internet Explorer 6 Public Preview
Installing or Upgrading the Windows Desktop Update (NT4 only)
Uninstalling for Previous Versions of Internet Explorer Unavailable
Installing over Localized Windows 98 Arabic and Hebrew Releases
Installing Internet Explorer 6 Public Preview with Norton Protected 
Recycle Bin Enabled
Installing on Windows 98 with Novell IPX/IP Client
CUSTOMER NOTES
Non-English Characters in URLs and Queries
Enhanced Encryption Strength
Operating System Limitations for Character Rotation in 
Vertical Text
Security Settings 
Contacts Missing in Address Book after Uninstalling Windows Me
Outlook Express Title Screen Does Not Match Version
Assistive Technology and Accessibility

DEVELOPERS' NOTES
New Language Features in JScript and VBScript
HTML Buttons with Unselectable Attribute
Msxml3.Dll Installs in Override Mode
Standards Compliance Issues


SYSTEM REQUIREMENTS
===================

Minimum system requirements to run Internet Explorer 6 Public Preview:
- 486 /66 MHz processor (Pentium processor recommended)

- Microsoft Windows 98 and Windows 98 Second Edition:
16 MB of RAM minimum
Windows 98 Full install size: 25.8 MB
Windows 98 SE IE6 full install size: 25.8 MB

- Microsoft Windows NT 4.0 Service Pack 6a and higher:
32 MB of RAM minimum
Full install size: 75 MB

- Microsoft Windows 2000:
32 MB of RAM minimum
Full install size: 75 MB

- For Microsoft Windows Millennium Edition: 
32 MB of RAM minimum
Full install size: 11.6 MB

- CD-ROM drive (if installation is done from a CD-ROM)

- Some components may require additional system resources
not outlined above.


Disk Space Requirements for Internet Explorer 6 Public Preview 
Installation
---------------------------------------------------------------
Internet Explorer 6 Public Preview setup installs the majority 
of its files on the drive where the Windows operating system is 
installed, regardless of the installation location you choose. 
To free up space on your hard disk in order to meet the disk 
space installation requirements, you must free up space on the 
drive where the Windows operating system is installed.


SETUP
===== 

Installing Internet Explorer 6 Public Preview
---------------------------------------------
Regardless of whether you choose to install over the network or 
download the installation files to your hard disk, some or all of 
the Setup files are copied to your hard disk. This allows you to 
reinstall more quickly if necessary. If you want to reclaim the 
disk space, you can remove the Setup directory.

>>>To remove the Setup directory:

1. In Control Panel, double-click Add/Remove Programs, and then 
click Internet Explorer 6 Public Preview.
2. Click Add/Remove.
3. Make sure the check box for Restore the Previous Windows 
Configuration is selected, and then click Advanced.
4. Click Remove Folder Containing Windows Update Setup Files, 
and then click OK.
5. When asked whether you want to continue, click Yes.

It is not possible to install Internet Explorer 6 Public Preview 
or run it from a network drive. However, you can download it to a 
network drive. To do this, map a network drive to a drive letter 
on your computer.

NOTE: Internet Explorer 6 Public Preview cannot be downloaded via 
a UNC path.


Running Internet Explorer 6 Public Preview on Microsoft Windows NT 4.0
----------------------------------------------------------------------
NOTE: You must have administrative privileges to install and 
uninstall this program on Windows NT, including the first 
time you start your computer after installing or uninstalling.
You must restart your computer after installing Internet 
Explorer 6 Public Preview. This is also true for some add-on 
components.

For corporate deployment on computers running Windows NT 4.0, ensure 
that you have the following free registry space:

- Upgrading from Internet Explorer 2.0 or Internet Explorer 3.x: 
at least 4 MB

- Upgrading from Internet Explorer 4.x:
at least 2.5 MB 

If you plan to run Internet Explorer 6 Public Preview on Windows NT 
4.0, user permissions must be set to Full Control for the Temporary 
Internet Files folder (cache). The user must have write permission 
so that files can be stored in the Temporary Internet Files directory.


Installing Windows NT 4.0 Service Packs over Internet Explorer 6 
Public Preview 
----------------------------------------------------------------
If you reinstall a Windows NT 4sp6a Service Pack after Internet 
Explorer 6 Public Preview is installed on your computer, some 
components will need to be re-registered. 

>>>To re-register components:

1. In Control Panel, double-click Add/Remove Programs.
2. Click the Install/Uninstall tab, and then click Microsoft 
Internet Explorer 6.
3. Click Add/Remove.
4. Click Repair Internet Explorer, and then click OK.
5. After the repair operation is complete, restart your computer.


Uninstalling Windows NT 4.0 Service Pack 6a with Internet Explorer 6 
Public Preview installed 
--------------------------------------------------------------------
It is recommended that users uninstall Internet Explorer 6 Public 
Preview before uninstalling NT 4.0 Service pack 6a.


Installing over Windows 2000 Releases
-------------------------------------
Typical and Full installs are not currently available for 
Windows 2000. Internet Explorer 6 Public Preview will install 
a minimal set of files onto your system. This includes the 
Internet Explorer 6 Public Preview Web browser and scripting 
support.


Uninstalling Internet Explorer 6 Public Preview Before Upgrading 
to Windows 2000
----------------------------------------------------------------
Windows 2000 contains an earlier version of Internet Explorer 
components than Internet Explorer 6 Public Preview. Before 
upgrading from Windows 95, Windows 98, Windows 98 Second Edition, 
or NT to Windows 2000, we recommend that users uninstall 
Internet Explorer 6 Public Preview. During the upgrade, you may 
notice the following message: "This program may not run correctly 
because of new features in Internet Explorer 4.0. You may need to 
obtain an updated version of this program." Although this message 
is misleading, please click on the Details button for a more
accurate description of the problem.


Downloading Internet Explorer 6 Public Preview Using a Third-party 
Download Manager
------------------------------------------------------------------
During the Internet Explorer 6 Public Preview install, Setup must 
download components from the Internet. Users who are utilizing 
third-party download managers (for example, Netzip,GetRight, or 
RealAudio's Download Demon) will intercept download requests. This 
will cause Setup to abort. To prevent this from occurring, disable 
third party download managers before running Setup.


High Encryption Support for Internet Explorer 6 Public Preview
--------------------------------------------------------------
High Encryption components are included for Windows 98/98 
Second Edition and Windows NT 4 sp6a. Windows Millennium 
Edition contains high encryption by default. To obtain high 
encryption support for Windows 2000, please visit Windows 
Update at http://www.windowsupdate.microsoft.com/ or 
http://www.microsoft.com/windows2000/downloads/recommended/
encryption/default.asp.


Installing or Upgrading the Windows Desktop Update (NT4 only)
-------------------------------------------------------------
If you have already installed Internet Explorer 6 Public Preview 
and would like to install the Windows Desktop Update, you must 
install Internet Explorer 4.01 SP2 before installing the upgrade.

>>>To install Windows Desktop Update:

1. Uninstall Internet Explorer 6 Public Preview by using the 
procedure described later in this document.
2. If Internet Explorer 4.01 SP2 is not already installed on your 
computer, install it.
3. Install the Windows Desktop Update by using Add/Remove Programs 
in Control Panel.
4. Reinstall Internet Explorer 6 Public Preview.


Uninstalling to a Previous Version of Internet Explorer Unavailable
-------------------------------------------------------------------
After uninstalling Internet Explorer 6 Public Preview, it is not 
possible to remove the browser that was installed prior to 
Internet Explorer 6 Public Preview.


Installing over Localized Windows 98 Arabic and Hebrew Releases
---------------------------------------------------------------
Windows 98 Arabic and Hebrew versions require the corresponding 
localized version of Internet Explorer 6 Public Preview. It is not 
possible to install the English version of Internet Explorer over 
the localized version of Windows 98. 


Installing Internet Explorer 6 Public Preview with Norton Protected 
Recycle Bin Enabled
-------------------------------------------------------------------
It is recommended that you disable the Norton Protected Recycle Bin 
before you install Internet Explorer 6 Public Preview and that you 
empty the Norton Protected Recycle Bin before you run Setup. Before 
you empty the Norton Protected Recycle Bin, be sure you review its 
contents in case it contains any items you want to recover. You can 
re-enable this feature after Setup is complete. This is recommended 
because Norton Protected Recycle Bin will intercept the removal of 
temporary files that Setup is trying to delete, and you could run 
out of free space on your hard disk if your remaining free space is 
limited. This would cause Internet Explorer Setup to appear locked. 
For instructions on disabling and re-enabling the Norton Protected 
Recycle Bin, see the Norton Utilities documentation.


Installing on Windows 98 with Novell IPX/IP Client
--------------------------------------------------
If you are using the Novell IPX/IP client with Windows 98, you may 
experience problems if you install Internet Explorer 6 Public Preview 
and Internet Tools from the Internet. If Setup appears to become 
unresponsive, restart your computer. Setup will continue and finish 
normally. To work around this problem, try one of the following 
options:

In Setup, select the Download Only option, and then run and install 
Internet Explorer 6 Public Preview normally.

-Or-

Install Internet Explorer 6 Public Preview from a CD-ROM.


==============
CUSTOMER NOTES
==============

Non-English Characters in URLs and Queries
------------------------------------------
Internet Explorer 6 Public Preview uses a new standard to transmit 
non-English addresses (URLs) to the server. URLs are now encoded in 
a character-encoding standard named UTF-8. If the server is running 
Windows 2000, the URLs will work as expected. Many servers cannot 
process URLs encoded in UTF-8.

>>>To use non-English characters in URLs with servers unable to 
process URLs encoded in UTF-8: 

1. On the Tools menu in the browser, click Internet Options.

2. Click the Advanced tab.

3. Under Browsing, click the Always Send URLs As UTF-8 check box 
to clear it.

The query part of URLs is transmitted in a form fully compatible 
with Internet Explorer 4 and later.


Operating System Limitations for Character Rotation in Vertical Text 
--------------------------------------------------------------------
When working with vertical text layout, full-width (East Asian 
language) characters will be displayed with upright orientation 
only on East Asian versions of Windows 95, Windows 98, Windows Me, 
and Windows NT 4.0 operating systems. All language versions of 
Windows 2000 provide this support. 


Security Settings
-----------------
The settings for the security levels of the Web content zones have 
changed for Internet Explorer 6 Public Preview and might no longer 
be consistent with those in earlier versions of Internet Explorer. 
If you upgrade from a previous version of Internet Explorer, Setup 
will save your previous security settings and transfer them to 
Internet Explorer 6 Public Preview as a Custom Security Level.


Contacts Missing in Address Book after Uninstalling Windows Me
--------------------------------------------------------------
When uninstalling Windows Millennium Edition (Me), contacts that 
you added while using Windows Me might be missing from the Windows 
Address Book. When you upgrade to Windows Me, the Windows Address 
Book data file is backed up. During the uninstallation process, the 
backup copy of the data file is restored, overwriting any data that 
had been added in Windows Me. To preserve any contacts made in 
Windows Me, back up the .wab file(s) before uninstalling. After 
Windows Me has been removed, the .wab file(s) can be recopied into 
place and used if Internet Explorer 5.01 or later is installed.


Outlook Express Title Screen Does Not Match Version
---------------------------------------------------
When you start Outlook Express, the title screen indicates that the 
product is "Microsoft Outlook Express 5" even though you installed 
a later version of Outlook Express. The title screen reflects only 
major product versions, such as version 4 or 5. Versions 5.01 and 6 
are considered minor upgrades.


Assistive Technology and Accessibility
--------------------------------------
Microsoft works to test with the latest versions of some 
accessibility aids. If you encounter problems with the interaction 
of Internet Explorer 6 Public Preview and the assistive technology 
that you use, please contact the manufacturer of your assistive 
technology to ensure that they can work with Microsoft to address 
the issue where appropriate.


=================
DEVELOPERS' NOTES
=================

New Language Features in JScript and VBScript
---------------------------------------------
Internet Explorer 6 Public Preview Ships with new versions of 
Microsoft JScript and Visual Basic Scripting Edition (VBScript). 
The documentation for the new language features is not yet 
complete but will be available at the time Internet Explorer 6 
is released. You can read about the most important new features 
in JScript and VBScript at http://msdn.microsoft.com/workshop/
languages/clinic/scripting11132000.asp. The updated Windows Script 
engines will also be posted for individual download from 
http://msdn.microsoft.com/scripting/ so they can be installed 
on machines that do not have Internet Explorer 6--for example, 
on an ASPWeb server.

The updated Windows Script engines will also be posted for 
individual download from http://msdn.microsoft.com/scripting/ 
so they can be installed on computers that are not running 
Internet Explorer 6 Public Preview--for example, on an ASP 
Web server.


HTML Buttons with Unselectable Attribute
----------------------------------------
When the "unselectable" attribute in Internet Explorer 6 Public 
Preview is applied to buttons, the default onclick action 
(depressing the button) does not take place. A simple workaround 
is to add a behavior to buttons that causes this action. Add the 
following to the top of the file containing the unselectable 
buttons (or to a CSS stylesheet that is referenced from the file):

<STYLE> BUTTON { behavior:url("***.htc") } </STYLE>
(where *** is the name of the .htc file that contains the behavior)
The .htc file should contain the following:
<component>
<attach event="onmousedown" onevent="element.style.border=
'thin inset'">
<attach event="onmouseup" onevent="element.style.border=
'thin outset'">
</component>


Msxml3.Dll Installs in Override Mode
------------------------------------
Internet Explorer 6 Public Preview is shipping with msxml3.dll 
installed in override mode. This means that all calls into any msxml 
DLL will be routed to msxml3.dll. Please pay special attention to any 
XML, XSL, or data island issues that may occur, and file a bug report 
describing the issue. If possible, send the XML (or XSL) code that 
caused the problem. 


Standards Compliance Issues
---------------------------
Internet Explorer 6 Public Preview offers considerable improvements 
in standards compliance. In some cases, this may cause HTML content 
to look differently than in previous versions of Internet Explorer. 
Many of the changes causing the largest compatibility problems are 
implemented only under a specific <!DOCTYPE> declaration in the HTML. 
If you see rendering problems, try removing any <!DOCTYPE> declaration 
in your code, and check the Developer Center for more information on 
these changes.