This article was previously published under Q250868
This article has been archived. It is offered "as is" and will no longer be updated.
Attempts to import user certificates from Lightweight Directory Access Protocol (LDAP) programs that support the binary attribute on the usercertificate command may not work and may generate "Unknown datatype" error message.
The LDAP command parser in Windows 2000 does not support the binary attribute.
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 1.
For a description of how the binary attribute works, see section 6.5 of RFC 2252.