QNetworkReply::ignoreSslErrors should mention that you have to specify the certificate.

When using QNetworkReply::ignoreSslErrors ( const QList<QSslError> & errors ) together with any QSslError that can have a certificate set, the error will only be ignored if you set the certificate that you want to ignore in the QSslError. Setting for example QSslError::SelfSignedCertificate will not ignore all self signed certificates, you have to specify which certificate that you should ignore in the error. The documention should be more clear about this.