Clarification needed on webhook expiration behavior in Teams change notification documentation

Hi laurent reece

Thank you for reaching out to Microsoft Q&A forum

Based on my research, there is no secret additional “minimum window” requirement beyond renewing before expiration, but practically you should renew well ahead of the deadline to avoid any chance of the subscription lapsing. With Teams webhooks expiring every 60 minutes, this means building a robust renewal strategy (for example, renew after 30–45 minutes of each cycle).

Additionally, also leverage this recommendations and features: consider using lifecycle notifications (especially if you need longer subscriptions or want a fail-safe warning), and always handle renewal responses. That way, your subscriptions will continuously deliver change notifications without silently dropping of.

For more information:

https://learn.microsoft.com/en-us/graph/teams-change-notification-in-microsoft-teams-overview

https://learn.microsoft.com/en-us/graph/api/resources/subscription?view=graph-rest-1.0

Best regards

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