The private part on the token-encrypted email is not opened if set the private part in the windows registry is decrypted. What is it connected with?

Question

Encryption

Encrypted email is not opened in outlook, while the private part of the certificate is stored on the token. When installing the private part in the windows registry, the same letter is decrypted. With what it can be connected?

Answer 1

There are no drivers and software for working with the token, or the mail software does not know how to work with private keys not in the registry.