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mediumExchangeOutlookupdatem365_message_center · Oct 27, 2026
Join button will require HTTPS meeting links
The Join button in Outlook will now require HTTPS meeting links, enhancing security by preventing the use of less secure HTTP links. This change affects users and administrators globally and is part of a general availability rollout.
“Services: Exchange Online. <p>[What and Why:]</p><p>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.</p><p>[Rollout Schedule:]</p><p>General Availability …”
View original article →Security
attack_surface_reduction
Audience
end_useradmin
Environment
cloudgccgcc_highdod
Ontology Topics
MS-101MS-100
Classification confidence: 95%
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