Updated October 14, 2022: We have updated the rollout timeline below. Thank you for your patience.
When using external access for Microsoft Teams, users receiving a group chat invitation from an unmanaged Teams user will be prompted with the option to acknowledge or leave the group chat.
This message is associated with Microsoft 365 Roadmap ID 95051.
When using external access for Teams, users receiving a group chat invitation from an unmanaged Teams user will be prompted with the option to acknowledge or leave the group chat.
When this will happen
We will begin rolling this feature out in early November (previously early October) and expect to complete rollout by early December (previously early November).
How this will affect your organization
There are no admin controls related to this feature. Users will see an invitation screen when added to a group chat by an external unmanaged Teams user. At this point they can choose to acknowledge the invitation or leave the group chat. Users will continue to have the option to block and unblock external unmanaged Teams users.
Users will not see this update if external access with unmanaged Teams users is disabled or if incoming chats from unmanaged Teams users are disabled.
What you need to do to prepare
If external access with unmanaged Teams users is enabled, consider notifying your users of this update. Visit this page for more information regarding external access settings with unmanaged Teams users.
Message ID: MC428514
Published: 09 September 2022
Updated: 14 October 2022
Cloud instance(s): Worldwide (Standard Multi-Tenant)
Platform(s): Mac, US Instances, Web, Windows Desktop, World tenant