OL2000: Secure Messaging Enhancements Information

This articles tells you where to find more information about security fixes that enhance the secure messaging capabilities and interoperability of Outlook 2000.

The following Knowledge Base articles contain information about the definition and use of digital certificates. The articles also include information about where and how to apply certain updates that address security issues with Microsoft Outlook.

Encryption and Message Security Overview

The "OL2000: Encryption and Message Security Overview" article provides a baseline description for Outlook 2000 security features that allow you to send and receive secure e-mail messages over the Internet. Outlook 2000 incorporates support for the Secure Multi-Purpose Internet Messaging Extensions (S/MIME) protocol. This standard enables you to send and receive signed or sealed (encrypted) Internet e-mail. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

How to Update Microsoft Internet Explorer

The environments that are supported are Windows NT 4.0 Service Pack 6a or Windows 2000 Service Pack 1, Microsoft Internet Explorer 5.01 Service Pack 2 or Internet Explorer 5.5 Service Pack 1, with Outlook 2000 Service Pack 2 or higher.

How to Obtain the Latest Internet Explorer 5.01 Service Pack

The "How to Obtain the Latest Internet Explorer 5.01 Service Pack" article tells you how to obtain the latest version of Microsoft Internet Explorer 5.01. Internet Explorer Service Packs are available as a collection of previously released fixes. If you have Internet Explorer, see the following Microsoft Web site to download the latest Service Pack: For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

How to Obtain the Latest Service Pack for Internet Explorer 5.5

This "How to Obtain the Latest Service Pack for Internet Explorer 5.5" article tells you how to obtain the latest version of Microsoft Internet Explorer 5.5. Internet Explorer Service Packs are available as a collection of previously released fixes. If you have Internet Explorer 5.5, see the following Microsoft Web sites to download the latest Service Pack: For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

How to Obtain the Latest Microsoft Office 2000 Service Pack

The "How to Obtain the Latest Office 2000 Service Pack" article tells you how to obtain the latest version of Microsoft Outlook. Microsoft Office 2000 Service Packs are available as a collection of previously released fixes. If you have a stand-alone version of Office 2000 and you have applied the security fixes available at the Office Update site (http://office.microsoft.com/), you do not need to install this service pack. For additional information about the latest service pack for Microsoft Office 2000, click the following article number to view the article in the Microsoft Knowledge Base:

Fixes in Office and Internet Explorer

The following articles describe fixes included Office 2000 service packs.

'No CRL Found' Error Message Even When CRL Is in Cryptdlg.dll

The "'No CRL Found' Error Message Even When CRL Is in Cryptdlg.dll" article describes the following problem. You may receive one of the following error messages if you try to verify a certificate that has been revoked and is on the certificate revocation list (CRL) that is downloaded by a CRL Distribution Point (CDP): -or- These error messages can occur in programs such as Outlook 2000 that can use certificates. The error message is returned as expected. Under some circumstances, the certificate may still get checked by using the CDP as if the certificate has not been revoked, which causes the error message.

This fix is included in Internet Explorer 5.01 Service Pack 2 and Internet Explorer 5.5 Service Pack 1. This is scheduled to be included with Internet Explorer 5.5 Service Pack 2. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

Retrieve LDAP Certificate Through Levels of Certificate Chain

The "OL2000: Retrieve LDAP Certificate Through Levels of Certificate Chain" article describes the following problem. Outlook 2000 is not able to navigate a Certificate Distribution Point (CDP) through multiple levels of a certificate chain after retrieving a certificate from a Lightweight Delivery Access Protocol (LDAP) server. This fix is included with Office 2000 Service Pack 2.
For additional information, click the article number below to view the article in the Microsoft Knowledge Base: The Lightweight Directory Access Protocol (LDAP) service for Outlook 2000 Corporate Workgroup (CW) does not support Secure Sockets Layer (SSL) for secure connections. This fix is included with Office 2000 Service Pack 2. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

Certificate Information from the Recipient Is Not Added

After you right-click a resolved recipient e-mail address, certificate information from the recipient is not added to the contact if you click Add to Contacts or Personal Address Book. This behavior can occur because neither the Personal Address Book nor the Add to Contacts commands adds certificates if they are not in the preferred certificate property. The certificate is not accessible from an LDAP server in some configurations. This fix is included with Office 2000 Service Pack 2. For additional information, click the article number below to view the article in the Microsoft Knowledge Base: