The goal of this post is to compile all publicly announced Office 365 service changes per month in 2019, especially those that may require admin action. These changes are listed below in chronological order, based on the “Action Required” or “Effective” date. Additional information and resources related to these changes are provided where applicable. Updates will be made to this post as new service changes are announced, or updates to announced changes are provided. Note: All changes may not have been communicated to your tenant / environment. Discontinuation of support for Session Border Controllers in Exchange Online Unified Messaging Action Required By: December 1, 2019 Details: In July 2017, we announced that support for Session Border Controllers (SBC) that connect third party PBX systems to Exchange Online Unified Messaging (UM) would be discontinued as of July 2018. After feedback from customers and partners concerned about this change, we are announcing additional time for customers to prepare. The new date for
read more Office 365 Planned Service Changes for December 2019
