(Updated) Microsoft Exchange Online: New limit for dynamic distribution groups (DDGs) [MC1163757]
Posted inExchange Online

(Updated) Microsoft Exchange Online: New limit for dynamic distribution groups (DDGs) [MC1163757]

Message ID: MC1163757 (Updated) Updated October 2, 2025: We have updated the title. Thank you for your patience.[Introduction]We will soon introduce a new limit on dynamic distribution groups (DDGs) in Microsoft Exchange Online. Each organization will be limited to a…
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Upcoming Secure by Default Settings Changes for Exchange and Teams APIs [MC1163922]
Posted inExchange Online Microsoft Teams

Upcoming Secure by Default Settings Changes for Exchange and Teams APIs [MC1163922]

Message ID: MC1163922 As part of the Microsoft Secure Future Initiative (SFI) and in alignment with the “Secure by Default" principle, we are updating the Microsoft-managed default consent policy in Microsoft 365 Graph to align with Microsoft’s ongoing security improvements,…
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Microsoft Exchange Online: New limit for dynamic distribution groups (DDGs) for Microsoft 365 operated by 21Vianet [MC1163757]
Posted inExchange Online

Microsoft Exchange Online: New limit for dynamic distribution groups (DDGs) for Microsoft 365 operated by 21Vianet [MC1163757]

Message ID: MC1163757 [Introduction]We will soon introduce a new limit on dynamic distribution groups (DDGs) in Microsoft Exchange Online. Each organization will be limited to a maximum of 3,000 DDGs. After this limit is reached, admins will need to remove…
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Outlook on the web activity-based timeout is retiring [MC1163753]
Posted inExchange Online Microsoft 365 for the web

Outlook on the web activity-based timeout is retiring [MC1163753]

Message ID: MC1163753 Outlook on the web activity-based timeout is retiring To simplify session timeout management and improve consistency across Microsoft 365 apps, we’re retiring the activity-based authentication timeout (ABT) setting for Outlook on the web. Admins should transition to…
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Microsoft Outlook: Declarative Agents in Copilot Chat coming to classic Outlook for Windows [MC1162288]
Posted inExchange Online

Microsoft Outlook: Declarative Agents in Copilot Chat coming to classic Outlook for Windows [MC1162288]

Message ID: MC1162288 [Introduction:]To enhance the extensibility of Microsoft 365 Copilot, we’re introducing support for Declarative Agents in Biz Chat and Biz Chat Starter within classic Outlook for Windows. Declarative Agents allow users to customize their Copilot experience by integrating…
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