(Updated) Retirement of external access token for actionable messages – moving to Microsoft Entra authentication [MC1189663]
Posted inMicrosoft 365 apps

(Updated) Retirement of external access token for actionable messages – moving to Microsoft Entra authentication [MC1189663]

Message ID: MC1189663 (Updated) Updated May 21, 2026: Phasing out to Legacy Auth Token (EAT) has been initiated and will complete by June 8th 2026. Thank you for your patience. [Introduction]We’re retiring the use of external access tokens for actionable messages…
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Microsoft Copilot Studio – Classic agent creation moves from Teams to web experience, retiring June 30, 2026 [MC1315217]
Posted inMicrosoft 365 suite Microsoft Teams

Microsoft Copilot Studio – Classic agent creation moves from Teams to web experience, retiring June 30, 2026 [MC1315217]

Message ID: MC1315217 [Introduction]We are retiring the ability to create classic style agents from the Microsoft Copilot Studio app in Microsoft Teams.Classic agent creation is now available in the Microsoft Copilot Studio web app to provide a more consistent and scalable…
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Microsoft SharePoint: Retirement of IDCRL authentication protocol and enforcement of OpenID Connect and OAuth protocols [MC1184649]
Posted inSharePoint Online

Microsoft SharePoint: Retirement of IDCRL authentication protocol and enforcement of OpenID Connect and OAuth protocols [MC1184649]

Message ID: MC1184649 (Updated) Updated May 13, 2026: We have initiated the deprecation rollout and expect to reach 100% production coverage in the next few weeks. We strongly recommend that customers transition to modern authentication at the earliest opportunity. Thank…
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Action required: Upgrade macOS 13 devices to maintain Teams desktop access [MC1308857]
Posted inMicrosoft Teams

Action required: Upgrade macOS 13 devices to maintain Teams desktop access [MC1308857]

Message ID: MC1308857 [Introduction] To maintain security, performance, and compatibility with newer macOS capabilities, Microsoft Teams will end support for desktop client updates on macOS 13 (Ventura). This ensures continued delivery of modern features and security updates on supported operating…
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(Updated) Retirement of SharePoint One-Time Passcode (SPO OTP) and transition to Microsoft Entra B2B [MC1243549]
Posted inSharePoint Online

(Updated) Retirement of SharePoint One-Time Passcode (SPO OTP) and transition to Microsoft Entra B2B [MC1243549]

Message ID: MC1243549 (Updated) Updated May 7, 2026: We have updated the content. Thank you for your patience. [Introduction]We are retiring SharePoint One‑Time Passcode (SPO OTP) authentication in OneDrive and SharePoint starting July 2026. Beginning in May 2026, new external sharing…
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Microsoft 365 Copilot: Claude Sonnet 4.5 retiring for Copilot Studio (automatic migration to Claude Sonnet 4.6) [MC1296875]

Microsoft 365 Copilot: Claude Sonnet 4.5 retiring for Copilot Studio (automatic migration to Claude Sonnet 4.6) [MC1296875]

Message ID: MC1296875 [Introduction]Starting May 30, Microsoft Copilot Studio agents that are currently configured to use Claude Sonnet 4.5 will be automatically migrated to newer, supported models. This migration aligns Copilot Studio with modern model capabilities, consistent platform support, and…
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