Problems Importing Security Certificates in E-Mail Program

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Article ID: 219377 - View products that this article applies to.
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When you import a Security Certificate in Microsoft Outlook or Microsoft Outlook Express, you may experience one of the following issues:
  • The path to the Security Certificate may contain random ASCII characters.

  • Internet Explorer may stop responding (hang) or close unexpectedly.


This issue can occur for any of the following reasons:
  • You exported the Security Certificate from Netscape Navigator.

  • You are trying to import a Security Certificate that uses the SMIME security standard.


To resolve this problem, obtain the latest service pack for Windows NT version 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:
For information on obtaining the individual software update, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

This issue was first resolved in Windows NT 4.0 Service Pack 5.


Microsoft has confirmed that this is a problem in Windows NT 4.0. This problem was first corrected in Windows NT version 4.0 Service Pack 5.

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.


Article ID: 219377 - Last Review: January 10, 2015 - Revision: 3.0
Applies to
  • Microsoft Windows NT Workstation 4.0 Developer Edition
  • Microsoft Windows NT Server 4.0 Standard Edition
  • Microsoft Windows NT Server 4.0 Enterprise Edition
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