Outlook 98 Does Not Read Certificates Created by Certificate Server

This article was previously published under Q202366
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Symptoms
Outlook 98 does not read certificates created by Microsoft Certificate Server. Outlook 98 is sensitive to the contents of the KeyUsages field.Specifically, if either KeyEncipherment or DigitalSignature is used,then both must be set.
Cause
The default policy module shipped with the Windows NT Option Pack only sets KeyEnchipherment and not DigitalSignature. Therefore, Outlook 98 does not read certificates created by Certificate Server running the default policy module.
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, click the following article number to view the article in theMicrosoft Knowledge Base:
152734 How to Obtain the Latest Windows NT 4.0 Service Pack

Workaround
You can also work around this issue by modifying the default policymodule to set both KeyEncipherment and DigitalSignature or neitherwhen you are issuing mail certificates.
Status
Microsoft has confirmed this to be a problem in Internet InformationServer version 4.0. 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.
More information
The source code for the default policy module is available aspart of the Windows Base Services component of the Platform SDK fromMSDN.
References
For additional information, click the article number below to view the article in the Microsoft Knowledge Base:
190157 Support for Windows NT 4.0 Option Pack on Terminal Server
Properties

Article ID: 202366 - Last Review: 10/26/2013 09:44:00 - Revision: 5.0

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