M365 Message Center

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30.01.2026

Services

Microsoft 365 apps

Updated January 30, 2026: Updated January 30, 2026: No new updates on this feature rollout yet. We expect to share a status update by the end of March. In the meantime, we have updated the Conditional Access Policy and Office Deployment documentation with a note that Conditional Access Policies may block Microsoft 365 self-installs.The My account portal will be replaced by a new modal dialog within the Microsoft 365 Copilot app (formerly Office.com) on web and desktop. The new modal will support end user self-installs that are currently available on the My account portal (Office, Project, Visio, and Skype for Business).[When this will happen:] Targeted Release: We will communicate via Message center when we are ready to proceed.General Availability (Worldwide): We will communicate via Message center when we are ready to proceed.[How this will affect your organization:]End users will be a

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29.01.2026

Services

Windows

The January 2026 non-security preview update is now available for Windows 11, versions 25H2 and 24H2. Information about the contents of this update is available from the release notes, which are accessible from the Windows 11 update history page. To learn more about the different types of monthly quality updates, see Windows monthly updates explained.Looking to explore upcoming features and improvements in Windows 11? Check out the Windows roadmap. It includes what’s coming to the Windows Insider Program, what’s gradually rolling out, and what’s generally available.Highlights for the Windows 11, version 25H2 update: The Settings Agent now supports more languages, with expanded support for German, Portuguese, Spanish, Korean, Japanese, Hindi, Italian, and Chinese (Simplified).*This update expands the functionality of Cross‑Device Resume. You can continue activities from your Android phone

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29.01.2026

Services

SharePoint Online

Updated January 29, 2026: We are updating this post as a reminder. Upcoming SharePoint Online changes may impact your organization. Please review the below.We are implementing the following changes to custom scripting and classic publishing in SharePoint Online.1. Disablement of custom scriptingCustom scripting will be disabled by default (setting DenyAddAndCustomizePages to 1 or $true) for sites created with the following templates:BLANKINTERNETCONTAINER#0 = Classic Publishing Portal Site CMSPUBLISHING#0 = Classic Publishing Site BLANKINTERNET#0 = Classic Publishing Site BlankCSPCONTAINER#0 = SharePoint Embedded SiteNOTE: Existing classic publishing sites created with the templates listed above will have custom scripting disabled by default. Disabling custom scripting does not affect the execution of scripts that have already been added to a site or page.Refer to this documentation to l

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28.01.2026

Handlung bis

31.01.2027

Services

Microsoft Defender XDR

Updated January 26, 2026: We have updated the content. Thank you for your patience. [Introduction] We’re retiring the Microsoft Defender for Endpoint (MDE) Advanced Hunting API and Microsoft Defender XDR Advanced Hunting API and transitioning customers to the Microsoft Graph Security API. This update aligns our security integrations with a unified interface and schema across Microsoft Defender products. The Microsoft Graph Security API provides broader data coverage, improved consistency, and better scalability for automation and security workflows. [When this will happen] Retirement start: February 6, 2026 Full retirement: February 1, 2027 After February 1, 2027, the MDE and XDR APIs will no longer function. [How this affects your organization] Who is affected: Organizations using the MDE or XDR Advanced Hunting API for automation, integration, or custom workflows.You are receiving this

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28.01.2026

Services

Windows

IMPORTANT: This notice is only relevant for environments where:Microsoft Office is usedScan Cab is used to check for update complianceThe January 2026 Scan Cab was deployed before 2:30 PM PT on January 27, 2026.An updated version of the January 2026 Scan Cab was made available at 2:30 PM PT on January 27, 2026. This Scan Cab includes new metadata corresponding to new updates for Microsoft Office 2016.The new security updates for Microsoft Office released January 26, 2026, included additional protections to address CVE-2026-21509. Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally. See the additional information section of this message for details.How this affects your organization:IT administrators who downloaded the Scan Cab before 2:30 PM PT on January 27, 2026, should re-acquire and re-deploy it

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26.01.2026

Services

Windows

(Updated 1/26 to adjust Windows Server entries and links)Microsoft released today a resolution for an issue observed after installing the January 2026 Windows security update. This issue may cause applications that open or save files stored in cloud‑backed locations to become unresponsive or display errors. Some installations of Outlook may also become unresponsive and fail to open when PST files are stored in cloud‑backed storage such as OneDrive. An out-of-band (OOB) update was released today, January 24, 2026, to address this issue. This cumulative update includes all protections and improvements from the January 2026 Windows security update released January 13, 2026, as well as from the OOB update released on January 17, 2026 (which introduced fixes for two known issues: remote desktop connections and hibernation failures). This OOB update is available through Windows Update for Wind