(Updated) Outlook: retiring “Contact Masking” (hide suggested recipients) –  March 31, 2026 [MC1234566]

(Updated) Outlook: retiring “Contact Masking” (hide suggested recipients) – March 31, 2026 [MC1234566]

Message ID: MC1234566 (Updated) Updated March 13, 2026: We have updated the content. Thank you for your patience. [What’s changing] In Outlook, users can hide a suggested recipient while addressing an email. For example, selecting the X next to a name…
Copilot extensibility: Microsoft 365 Copilot Declarative Agents model upgrade to GPT‑5.2 [MC1251203]

Copilot extensibility: Microsoft 365 Copilot Declarative Agents model upgrade to GPT‑5.2 [MC1251203]

Message ID: MC1251203 [Introduction]Microsoft 365 Copilot Declarative Agents are being upgraded to the GPT‑5.2 model. This update improves quality and reliability for agent scenarios such as reasoning, multi‑step workflows, tool calling, structured output generation, and document analysis. As with GPT‑5.1,…
(Update)Microsoft Entra ID: General Availability of passkey profiles and migration for existing Passkeys (FIDO2) tenants [MC1221452]

(Update)Microsoft Entra ID: General Availability of passkey profiles and migration for existing Passkeys (FIDO2) tenants [MC1221452]

Message ID: MC1221452 (Updated) Updated March 13, 2026: We have updated the content. Thank you for your patience.[Introduction]Starting in March 2026, Microsoft Entra ID will introduce passkey profiles and synced passkeys to General Availability (GA). This update allows administrators to…
Microsoft Viva Engage | Email sender domain migration from @yammer.com to @engage.mail.microsoft [MC1251200]

Microsoft Viva Engage | Email sender domain migration from @yammer.com to @engage.mail.microsoft [MC1251200]

Message ID: MC1251200 [Introduction]As part of the final phase of the Viva Engage rebranding, we’re updating the email sender domains used for Viva Engage communications. This change ensures a consistent and secure brand experience across all surfaces and completes the…
Microsoft Teams: Identify external bots joining your Teams meetings [MC1251206]

Microsoft Teams: Identify external bots joining your Teams meetings [MC1251206]

Message ID: MC1251206 [Introduction]AI‑powered meeting assistant bots—such as transcription and summarization services—are increasingly used to enhance productivity in online meetings. While these tools can be valuable, some bots may access meetings without the knowledge or consent of the meeting organizer…
(Updated) Content Security Policies (CSP) are coming to SharePoint Online and might impact your custom SPFx solutions [MC1193419]

(Updated) Content Security Policies (CSP) are coming to SharePoint Online and might impact your custom SPFx solutions [MC1193419]

Message ID: MC1193419 (Updated) Updated March 13, 2026: We have updated the timeline. Thank you for your patience. We’re improving SharePoint Online security via Content Security Policy (CSP) enforcement. Currently CSP is applied in reporting mode but as of March 1,…