SecuPress SSL Fixer, to solve the cURL error 60
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.
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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.