MC244062 – Yammer networks aligned to native mode currently do not allow guests. Guest support has been in public preview since December 2020 (MC229724). The feature is now moving to general availability.
This message is associated with Microsoft 365 Roadmap ID 80993.
When this will happen
The feature moves from public preview to general availability in late March.
How this will affect your organization
With this update, admins of Yammer networks aligned to native mode can enable external collaboration so that Yammer community admins may invite guests to a community.
By default, guest access is turned off.
What you need to do to prepare
To allow guest access, go to Yammer network admin center > Security Settings > External messaging settings.