Je n'utilise pas non plus d'OS propriétaire. Par contre, le site StartSSL [http://cert.startcom.org/] indique:
« The StartCom Certification Authority is today supported by most important platforms like Microsoft Windows, Apple Macintosh OS X and many Linux operating systems and browsers like Internet Explorer, Mozilla Firefox, Safari and Google's Chrome provide built-in support. Should you be using an older or unsupported browser you may import our CA certificate. »
[^] # Re: StartSSL
Posté par netsurfeur . En réponse au message Certificat certifié - https. Évalué à 1.
« The StartCom Certification Authority is today supported by most important platforms like Microsoft Windows, Apple Macintosh OS X and many Linux operating systems and browsers like Internet Explorer, Mozilla Firefox, Safari and Google's Chrome provide built-in support. Should you be using an older or unsupported browser you may import our CA certificate. »
D'après ce site [http://www.istartedsomething.com/20091010/microsoft-free-roo(...)], le « root CA » de StartSSL est inclus par Microsoft dans les versions récentes (à partir de 2009) de Windows et IE.