The goal of this post is to compile all publicly announced Office 365 service changes for 2019, especially those that may require admin action, into a single reference. These changes are listed below in chronological order, based on the "Action Required" 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.
- Added Discontinuation of support for Session Border Controllers in Exchange Online Unified Messaging - action required by April 30, 2019
- Added Retirement of support for Third-Party Audio Conferencing Providers in Skype for Business Online - action required by April 1, 2019
Retirement of support for Third-Party Audio Conferencing Providers in Skype for Business Online
Action Required by: April 1, 2019
Details: Beginning April 1, 2019, we are retiring support of our integration of third-party audio conferencing providers (ACP) in Skype for Business Online Meetings. On April 1, 2019, the following changes will be observed:
- Participants who attempt to join any Skype for Business meeting via dial-in numbers provided by a third-party ACP service will no longer be connected to the Skype for Business meeting
- Users enabled for a third-party ACP service will no longer have their dial-in information automatically included in any new Skype for Business meeting invites
To prepare for this change, we encourage affected organizations to notify their enabled users of this planned update prior to April 1, 2019. After this date, users can continue to use Skype for Business with no interruption to their online meetings; however, organizations will need to enable their users for Audio Conferencing if they require dial-in audio conferencing with Skype for Business or Microsoft Teams.
Depending on the desired end state of the organization, there are three paths that can be followed:
- Migrate to Microsoft Audio Conferencing
- Continue to separately use a third-party audio conferencing provider
- Stop using dial-in conferencing altogether
For more information, please review the details provided at the link below in "Additional Information".
Discontinuation of support for Session Border Controllers in Exchange Online Unified Messaging
Action Required by: April 30, 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 discontinuation will be April 30, 2019. Customers with existing deployments remain fully supported until this date. However, Microsoft strongly advises all customers to begin their voicemail transition now.
The following configurations are not affected by this change:
- Skype for Business Server (on-premises) connected to Exchange Online UM
- 3rd party voicemail solutions that deposit voicemail messages into Exchange Online mailboxes through APIs, rather than an SBC connection
- All forms of Exchange Server UM (on-premises)
There are several alternative solutions for impacted customers, all listed in the Exchange Team blog post announcing this change.
- Microsoft Tech Community Discussion
- New date for discontinuation of support for Session Border Controllers in Exchange Online Unified Messaging