M365 Message Center

Geändert

09.09.2025

Services

Windows

Important hardening changes are here. Starting with the September 2025 security update, WSUS running on Windows Server 2025 is removing dependencies on old code that’s no longer supported. This means that Windows operating systems (OS) that reached the end of their lifecycle will no longer qualify to receive extended security updates (ESU), unless you take additional action. Short-term and long-term next steps are available for Windows Server 2012 and Windows Server 2012 R2 that still need to receive ESUs. When will this happen: September 9, 2025 How this will affect your organization: Removing certain binaries from WSUS helps ensure the integrity and security of our software supply chain. This specifically applies to dependencies on components that no longer meet our compliance and security standards. The security benefit of removing these binaries from Windows Server 2025 comes with a

Geändert

09.09.2025

Services

Windows

The September 2025 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 and Windows 10 update history pages. To learn more about the different types of monthly quality updates, see Windows monthly updates explained. Highlights for the Windows 11, version 24H2 update: This security update includes improvements that were a part of update KB5064081 (released August 29, 2025).This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.This update addresses an issue that caused non-admin users to receive unexpected User Account Control (UAC) prompts when MSI installers perform certain custom actions.This update enables auditing Server Messag

Geändert

09.09.2025

Services

Windows

Windows updates released September 9, 2025 and later, introduce security hardening changes to certificate mapping requirements in Windows Servers. The is the final milestone of a rollout that has gradually been taking place since 2023. IT administrators need to take action to ensure normal operations in accordance with the new certificate mapping criteria, and install the September 9, 2025 updates.For full details, see KB5014754: Certificate-based authentication changes on Windows domain controllers.When will this happen:This change is effective immediately in Windows updates released September 9, 2025. Servers which run Active Directory Certificate Services, as well as Windows domain controllers that service certificate-based authentication, are now required to meet certain certificate mapping criteria in order for authentication operations to succeed. These changes address vulnerabilit

Geändert

05.09.2025

Services

Microsoft Entra

Updated September 5, 2025: Gallatin customers are advised to still implement multifactor authentication for user accounts to improve security, but there will not be Microsoft enforcement at this time.IntroductionTo strengthen security across Azure environments, Microsoft is introducing enforcement of multifactor authentication (MFA) for all Azure resource management actions. This change helps protect your organization from unauthorized access and aligns with industry best practices for identity protection. This effort is part of Microsoft’s commitment to enhance security for all customers and follows Azure’s Phase 1 rollout completed last year. Phase 2 enforcement ensures that all Azure clients - including CLI, PowerShell, SDKs, and REST APIs - are protected against unauthorized access. When this will happenPhase 2 enforcement will begin rolling out on October 1, 2025, and will be applie

Geändert

03.09.2025

Services

Microsoft Teams

Updated September 3, 2025: We have updated the timeline. Thank you for your patience.Coming soon for Microsoft Teams: A new Manage what attendees see feature will help organizers and presenters deliver polished town hall events by simplifying the attendee view and keeping the focus on participants brought on screen. The new feature allows assigned organizers and presenters to preview changes before applying them all at once.This message applies to Teams for Windows desktop, Teams for Mac desktop, and Teams for the web.This message is associated with Microsoft 365 Roadmap ID 487431. [When this will happen:] Targeted Release: We will begin rolling out mid-July 2025 and expect to complete by late July 2025. General Availability (Worldwide): We will begin rolling out late July 2025 and expect to complete by late September 2025.[How this will affect your organization:]Before this rollout, whe

Geändert

02.09.2025

Services

SharePoint Online · Microsoft OneDrive

Introduction Organizations undergoing rebranding, mergers, acquisitions, divestitures, or tenant consolidations often need their SharePoint domain name in URLs to reflect their new identity. The SharePoint Online (SPO) Tenant Rename feature enables this change. We are announcing General Availability (GA) of Advanced Tenant Rename for tenants with up to 500K SharePoint sites, expanding support beyond the previous 100K site limit. When this will happenGeneral Availability (Worldwide): We began rolling out in mid-August 2025 and expect to complete by early September 2025.This feature will be generally available worldwide starting September 1, 2025. How this affects your organization This update allows rename support for tenants with up to 500K total SharePoint sites. It maintains high reliability across rename operations and ensures business-as-usual continuity during and after the rename.