For information about the differences between Microsoft Outlook and Microsoft Outlook Express e-mail clients, click the following article number to view the article in the Microsoft Knowledge Base:
257824 OL2000: Differences Between Outlook and Outlook Express
MORE INFORMATION
Outlook Express 6 is installed as a component of Microsoft Internet Explorer 6. You can install Internet Explorer 6 on a computer that is running Microsoft Windows 98 or later or Microsoft Windows NT 4.0 Service Pack 6a (SP6a) or later. You can also install Internet Explorer 6 as an upgrade to any existing version of Internet Explorer. For information about how to download and install Internet Explorer 6, view the following Microsoft Web site:
For additional information about Internet Explorer 6, click the following article number to view the article in the Microsoft Knowledge Base:
293513
Availability and description of Internet Explorer 6
Virus Protection in Outlook Express 6
Several features have been added to Outlook Express 6 to protect you against viruses that can be transmitted through e-mail messages.
For additional information about these features, click the following article number to view the article in the Microsoft Knowledge Base:
291387
Using virus protection features in Outlook Express 6
General Setup Information
Outlook Express 6 is installed as a component of Internet Explorer 6. For information about system requirements, known installation issues, and how to install Internet Explorer 6, see the Readme.txt file in the Internet Explorer installation folder. The following information describes only behavior that is new or changed from Microsoft Internet Explorer 5, 5.01, and 5.5.
Setup on Microsoft Windows 2000 Includes Outlook Express 6
As of March 2001, Typical and Full installations are not available for Windows 2000. Internet Explorer 6 installs a minimal set of files on your computer; this set of files includes the Internet Explorer 6 Web browser, scripting support, and Outlook Express 6.
Setup Is Not Supported on Windows 95
Internet Explorer 6 installation is not supported on computers that are running Microsoft Windows 95. You must be running Windows 98 or later or Windows NT 4.0 SP6a or later to install Internet Explorer 6.
Setup on Windows NT 4.0 Requires Windows NT 4.0 SP6a
When you try to install Internet Explorer 6 on a computer that is running Windows NT 4.0, you may receive the following error message:
NT4 Service Pack 6a or greater must be installed before The Windows Update:
Internet Explorer and Internet Tools can continue
Internet Explorer 6 requires Windows NT 4.0 SP6a or later.
For additional information about how to obtain the latest Windows NT 4.0 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
152734
How to obtain the latest Windows NT 4.0 service pack
High Encryption Support
If you are running Internet Explorer 5.01 or earlier on a computer that is
running Windows 98, Microsoft Windows 98 Second Edition, or Windows NT 4.0, when you
install Internet Explorer 6, you upgrade your computer to 128-bit encryption. If your computer is running Windows 2000, when you install Internet Explorer 6, you do not change the level of encryption on your computer. You can upgrade Windows 2000 by using the High Encryption Pack that is located on the original installation media and on the Microsoft Windows Update Web site. If your computer is running Microsoft Windows Me, your computer is already using 128-bit encryption.