Access to legacy Viva Engage (Yammer) networks ends October 13, 2025. Networks not upgraded to Native Mode will become inaccessible and scheduled for deletion. Admins should verify and upgrade networks created before January 16, 2020, via the Engage admin center to avoid data loss.
Applies to: Microsoft Viva
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).