Windows Vista - http://www.vistaarticles.com
Logon Interface from Unexpected Credential Provider
http://www.vistaarticles.com/articles/207/1/Logon-Interface-from-Unexpected-Credential-Provider
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Published on 12/10/2006
 
The user sees a logon interface from an unexpected credential provider when a user tries to log on to a Windows Vista-based computer.

Logon Interface from Unexpected Credential Provider

This behavior occurs because the first credential provider that calls the ICredentialProvider::GetCredentialCount method is designated as the default credential provider and is used to provide the logon interface.

Consider the following scenario: A user tries to log on to a Microsoft Windows Vista-based computer that has multiple credential providers. You expect the logon interface to be provided by a certain credential provider. Instead, the user sees a logon interface from an unexpected credential provider.

For example, when a user tries to log on to the computer, the user sees the logon interface from a fingerprint scanner credential provider instead of the logon interface from a smart card credential provider.

This behavior is by design.