Outlook will improve handling of the x-ms-reactions: disallow header in Classic Outlook for Windows by disabling the Reactions button when reactions are disallowed and reverting failed attempts. This update, rolling out May-June 2026, ensures consistent behavior and reduces user confusion without requiring action.
OneDrive and SharePoint will support viewing and editing Markdown (.md) files directly in the browser with a side-by-side editor and preview, starting mid-April 2026. This feature is enabled by default, requires no admin action, and allows easy management of Markdown files alongside other Microsoft 365 files.
Teams Phone will support multi-line users, allowing admins to assign up to 10 phone numbers per user within one Teams account. Users can call from multiple numbers on desktop, mobile, and devices. Rollout begins mid-April 2026. The feature is off by default and requires admin configuration and a Teams Phone license.
Microsoft Purview Endpoint DLP will support clickable hyperlinks in warn and block toast notifications in Microsoft Edge starting April 2026. Admins can link to policies, training, or support without changing enforcement. Requires updated Defender client and Edge versions; admins control hyperlink inclusion via policy settings.
Microsoft Teams will introduce AI-generated video recaps for recorded English meetings, available only to users with a Microsoft 365 Copilot license. These narrated highlights combine key takeaways and clips, require no admin changes, and will roll out from April to May 2026.
Microsoft Purview introduces a priority cleanup workflow allowing admins to hard delete specific OneDrive and SharePoint content, even under retention or holds, with required eDiscovery approval. Rolling out late May to mid-June 2026, this feature reduces data risk while maintaining compliance and requires explicit admin setup.
Microsoft Purview Data Lifecycle Management will support retention and deletion policies for Microsoft Teams call logs starting late April 2026. This enables compliance admins to manage call log retention per regulations, ending indefinite default retention, without affecting user calling experiences. Organizations should prepare by reviewing and updating policies.
We are announcing the Tool & Topic Invocation Grader in Microsoft Copilot Studio. This feature will reach general availability on March 31, 2026.
The option to specify client ID and secret when creating Azure ACS principals will be removed. Users must adopt the system-generated client ID and secret. This change will start in early October 2024 and end by early November 2024. No admin action is required for this automatic change. Azure ACS is retiring on April 2, 2026.
OneDrive and SharePoint will use Microsoft Entra B2B as the invitation and authentication method for external users, replacing the legacy SharePoint One Time Passcode (SPO OTP) experience. External sharing will automatically create B2B guest accounts in your directory, delivering consistent external collaboration across Microsoft 365, stronger guest identity management, and modern security aligned with Microsoft Entra standards.
I've been working with Microsoft Technologies over the last ten years, mainly focused on creating collaboration and productivity solutions that drive the adoption of Microsoft Modern Workplace.
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