针对Firefox 42,工具-选项-高级-证书-查看证书-证书机构,找到StartCom Ltd.,将StartCom开头的,软件安全设备的证书全部删掉。
重启模拟器即可验证身份登录StartSSL了。

英文版解决办法:
removing all ‘Software Security Device’s under node ‘StartCom Ltd.’, which is accessible in the tree view at Edit->Preferences->Advanced->Certificates->View Certificates->Authorities at node ‘StartCom Ltd.’

英文版解决办法来自:https://cnemes.com/blog/2015/01/06/starcom-firefox-cant-login/

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