Summary
- Outlook’s Join button will only appear for meetings that use HTTPS join URLs.
- Meetings that contain only HTTP join URLs will no longer show the Join button.
- Most organizations are not expected to be affected, but third-party meeting providers, add-ins, and custom integrations that generate HTTP-only join links may be impacted.
- Admins should verify that meeting providers and integrations generate HTTPS join URLs and update any HTTP-based configurations before the change is enforced.
Primary Service: Exchange
Admin Impact: Low
User Impact: Medium
Release Start: 30 Nov 2026
Release End: 31 Dec 2026
Services: Exchange Online, Outlook
Category: Plan for change
Tags: Admin Action, Feature Update
History
10/27/2026 Item Added to Message Center
Microsoft Message
We’re updating the Join button experience in Outlook to use HTTPS meeting join URLs. Beginning the week of November 30, 2026, the Join button will no longer appear for meetings that contain only an HTTP join URL.
Rollout Schedule
General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out in late November 2026 and expect to complete by late December 2026.
Impact on Your Organization
Meetings with HTTPS join URLs will continue to display the Join button. Organizations using online meeting providers, add-ins, or custom integrations that generate HTTP-only join URLs may find that the button no longer appears for those meetings. Most organizations are not expected to be affected.
Action Required/Recommendations
No action is needed if your meeting providers and integrations already generate HTTPS join URLs. If you use third-party online meeting providers, add-ins, or custom integrations, confirm that they generate HTTPS join URLs. Work with the provider or integration owner to update HTTP URLs and validate newly created meeting invitations before the change takes effect.
Compliance considerations
No compliance considerations identified. Review as appropriate for your organization.