Consider the following scenario:

• You are running a Windows Vista Service Pack 1-based computer.
• You use a custom Cryptographic Service Provider (CSP) that is based on the winscard module.

When the CSP process closes in this scenario, the SCardReleaseContext function returns a “0×80100004 (SCARD_E_INVALID_PARAMETER)” error code.

On a Windows Vista-based computer, you use the Certificate Import Wizard to try to install a certificate. To do this, you double-click the certificate file, and then you click Install Certificate. During the installation, the Rundll32.exe process may crash.

This problem occurs if a third-party cryptographic service provider (CSP) is installed on the computer.