SecuPress SSL Fixer is a free plugin available on WordPress repository allowing the manuel and temporary deactivation of SSL Check for your external HTTP requests done by WordPress.
SSL, HTTPS and Network
Do you have any questions about SSL, HTTPs and other network specific issues? SSL (Secure Sockets Layer) allows an encrypted link to be made between a server (like the one hosting your website) and a browser or a mail server. HTTPS is related to SSL because HTTPS implies the use of a Secure Socket Layer (SSL for short) to encrypt and decrypt user page requests and the pages returned by a Web server.