Lync and Skype for Business clients may connect to Skype for Business Online, Exchange Online or both depending on where the account for these services are homed (online or on-premises). Lync/Skype client connectivity to Office 365 We will cover each of these scenarios independently in the following sections. 3rd party integration with Skype for Business Online.On-premises server integration w/Office 365.Lync/Skype client connectivity to Office 365.If you would like to prepare your environments for the upcoming TLS 1.2 change, there are three general scenarios you should review and, if applicable to your organization, adequately plan and prepare for. For more details on TLS, please consult the following whitepaper: hereįor additional background understanding of TLS (and a great resource for Exchange customers), see the following blog post. This change will provide our customers with the best-in-class encryption for our customers. This was previously announced in the following support article. We are planning to discontinue support for Transport Layer Security (TLS) versions 1.0 and 1.1 in Microsoft Office 365 on October 31, 2018.

Note that there may be many dependencies and connectivity considerations in your environment so extensive planning and testing is advised. Please carefully review all the information in this blog post as you prepare for the mandatory use of TLS 1.2 in Office 365. The purpose of this blog post is to provide the necessary guidance for our Skype for Business Server, Lync Server, and Skype for Business Online customers to prepare for the deprecation of TLS 1.0 and 1.1 in Office 365.

Skype for business versions list