M365 Message Center

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24.02.2026

Services

Microsoft Teams

Updated February 24, 2026: We have updated the timeline. Thank you for your patience. [Introduction] Teams meeting Notes, powered by Loop, are now available for instant calls and meetings, like those started from Meet now and calls started from chat. Meeting notes are Loop components in Teams meetings and chats that allow users to collaboratively build agendas, capture notes, and create action items. Once added, they stay in sync and can be shared and edited in the Loop app in your web browser.This message applies to Teams for Windows desktop, Teams for Mac desktop, and Teams for the web and is associated with Microsoft 365 Roadmap ID 541831. [When this will happen:] Targeted Release: We will begin rollout early April 2026 (previously mid-March) and expect to complete mid-April 2026 (previously late March).General Availability (Worldwide): We will begin rollout mid-April 2026 (previously

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20.02.2026

Services

Microsoft Copilot (Microsoft 365)

Updated February 20, 2026: We have updated the timeline. Thank you for your patience.Disclaimer: The original message center post was published on August 1, 2025. We previously stated that this is a new feature when it is an expanded capability of the existing feature memory in Copilot. This expanded capability requires new processing of users' data, which is outlined below. We have edited the content below for accuracy and clarity. Thank you to the customers who provided feedback over the past few weeks. We have adjusted our roadmap to address your needs and concerns. Starting September 1, 2025, Microsoft 365 Copilot will start remembering key highlights from your person-to-person communications in chats, emails, and meetings. Initially these memories will be used to improve the quality of Copilot responses to people-related questions. These memories are private to the user. This featur

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19.02.2026

Services

Planner

Updated February 19, 2026: Performance may be slower on some browsers for large basic plans with more than 300 tasks. For best results, please use the latest versions of Edge (144 or higher) or Chrome (144 or higher). Meanwhile, we're also working on an update that we expect to improve performance.[Introduction] In early 2026, a major update of Planner will begin rolling out. This update will introduce several new capabilities. In addition, several features will be retired from Microsoft Planner. These changes will begin rolling out between mid-January 2026 and mid-February 2026. [When this will happen:]Refer to the sections below for details on timing. [How this affects your organization:]Who is affected: All users of Microsoft Planner in your organization, including those using Planner components in Loop, integrations with Viva Goals, and premium Planner plans.What will happen: In earl

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10.02.2026

Services

Windows

Windows 11, version 26H1 is a hardware‑optimized release designed to enable next‑generation silicon developed in partnership with device manufacturers and silicon partners. This release will be available exclusively as a preinstalled experience on select new devices beginning in early 2026. It is not intended as a feature update for existing Windows 11 devices and will not be offered through Windows Update. When will this happen: The first devices with Windows 11, version 26H1 preinstalled will start shipping in early 2026. This release is limited to select new devices only and is not offered as an in‑place update for devices running Windows 11, versions 25H2 or 24H2. How this will affect your organization: Windows 11, version 26H1 is scoped specifically for select new hardware platforms, so it will not be offered through Windows Update for existing devices and will not impact ongoing ro

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10.02.2026

Services

Windows

Secure Boot is a foundational Windows security feature that runs at startup, before Windows load, and helps ensure that only trusted, digitally signed software can execute. After more than 15 years of continuous service, the original Secure Boot certificates are reaching the end of their planned lifecycle and begin expiring in late June 2026.To learn more about Microsoft’s effort to update these certificates, see the blog post Refreshing the root of trust: industry collaboration on Secure Boot certificate updates. To prevent disruption and maintain secure startup across Windows environments, plan for these certificates update following the guidance in the Secure Boot playbook.When this will happen:The 2011 Secure Boot certificates begin expiring in June 2026.What you need to do to prepare:Review the Secure Boot playbook for certificates expiring in 2026 to understand requirements, timel

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10.02.2026

Services

Windows

The February 2026 security update is now available for all supported versions of Windows. We recommend that you install these updates promptly. For more information about the contents of this update, see the release notes, which are easily accessible from the Windows 11 update history page. To learn more about the different types of monthly quality updates, see Windows monthly updates explained. Highlights for the Windows 11, version 25H2 update: This security update includes improvements that were a part of update KB5074109 (released January 13, 2026), KB5077744 (released January 17, 2026), and KB5078127 (released January 24, 2026).This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.This update addresses an issue that determines device eligibility for the full-screen gaming experience.This update addresses an issue that pre