Microsoft released Security Advisory 3009008 to provide guidance related to a vulnerability in Secure Sockets Layer (SSL) 3.0 which could allow information disclosure. This is an industry-wide vulnerability that affects the protocol itself and is not specific to Microsofts implementation. Starting on December 1, 2014, Azure and Office 365 will begin disabling support for SSL. This means that all client/browser combinations will need to utilize. TLS 1.0 or higher to connect to. Office 365 services without issues.”]
Source: https://azure.microsoft.com/en-us/blog/protecting-against-the-ssl-3-0-vulnerability/