M365 Message Center

Geändert

16.03.2026

Services

Microsoft Teams

[Introduction] Teams Phone user multi-line provides greater flexibility for organizations whose users manage multiple business numbers. This capability allows administrators to assign up to 10 telephone numbers to a single Teams Phone user, all within one Teams account. Users can make and receive calls from multiple numbers across Teams desktop, Teams mobile, and Teams devices without switching accounts or hardware. This enhancement supports a familiar and localized calling experience for users who work across regions, roles, or business lines. This capability supports scenarios such as: Establishing local presence across multiple regions Supporting users with multiple roles or responsibilities Allowing executives, assistants, or support teams to manage multiple business lines within one Teams account This message applies to Teams for Windows desktop, Teams for Mac desktop, and Teams for

Geändert

16.03.2026

Services

Windows

Microsoft has identified an issue affecting hotpatch-enabled Enterprise editions of Windows where Bluetooth devices may not appear on the Bluetooth & devices page in Windows Settings or in Quick Settings, even though the devices are connected and functioning as expected. In addition, users might be unable to add Bluetooth devices because available devices do not appear in the connection list.This issue was identified in Microsoft’s internal environment and is expected to affect a limited set of Enterprise devices running Windows hotpatch updates.An out-of-band (OOB) hotpatch update (KB5084897) was released today, March 16, 2026, to address this issue. This cumulative update includes all protections and improvements from the March 2026 Windows hotpatch updates released on March 10 and March 13, 2026.This OOB hotpatch update is offered only to hotpatch‑enabled Windows 11, versions 25H2 and

Geändert

13.03.2026

Services

Windows

Microsoft has identified a security issue in the Windows Routing and Remote Access Service (RRAS) management tool that could allow remote code execution when connecting to a malicious server. This issue only applies to a limited set of scenarios involving Enterprise client devices running hotpatch updates and being used for remote server management.An out-of-band (OOB) hotpatch update (KB5084597) was released today, March 13, 2026, to address this issue. This cumulative update includes all protections and improvements from the March 2026 Windows security update released March 10, 2026. No action is required if:Your devices receive standard Windows updates.If you are not using the RRAS management tool on Windows devices running versions 25H2 or 24H2.This OOB hotpatch update is available for Windows 11, versions 25H2 and 24H2 devices enrolled in hotpatch updates and managed by Windows Auto

Geändert

13.03.2026

Services

Windows

As announced in January 2026, the unattend.xml file used in hands‑free deployment poses a vulnerability when transmitted over an unauthenticated RPC channel. Beginning with the April 2026 security update, IT admins should prepare for the second phase of hardening for CVE-2026-0386. These changes will make hands‑free deployment disabled by default to enforce secure behavior. After this update, hands‑free deployment will no longer work unless explicitly overridden with registry settings.When will this happen:Starting with the April 2026 security update, Windows Deployment Services (WDS) will enforce secure‑by‑default behavior by automatically disabling hands‑free deployment.How this will affect your organization:After installing the April 2026 security update, hands‑free deployment will be blocked to prevent unauthenticated access to unattend.xml, enforcing the hardening requirements for C

Geändert

13.03.2026

Services

Microsoft Dataverse · Power Platform

We are announcing our CAE rollout for user sign-in flows to Dataverse as part of ongoing security improvements for Power Platform. This change affects interactive user access to Dataverse and relies on Microsoft Entra Conditional Access (CAE) policies for near real-time session evaluation. This feature is being gradually rolled out across Dataverse environments, which is anticipated to be complete by September 2026. Users are advised to review their user-focused CAE Conditional Access policies to ensure continued access to Dataverse. How does this affect me? Dataverse user access is transitioning to CAE-enabled authentication, where user sessions are continuously evaluated based on Conditional Access policy signals rather than only at the initial sign-in. As part of this rollout, user sign-in traffic to Dataverse may originate from managed locations that must be permitted and compliant w

Geändert

12.03.2026

Services

Windows

If you are an IT admin with questions about managing and updating Windows, we want to help. Every third Thursday of the month, we host a live chat-based event on the Tech Community called Windows Office Hours. Members of the Windows, Microsoft Intune, Windows Autopilot, Windows Autopatch, and Windows 365 engineering teams will be standing by to answer your questions. We also have experts from FastTrack, the Customer Acceleration Team, and Microsoft public sector teams. Want to attend the March 19 session of Office Hours? Add it to your calendar and select Attend on the event page to let us know you’re coming. There is no video or live meeting component. Simply visit the event page, log in to the Tech Community, and leave your questions in the Comments section. You can also bookmark https://aka.ms/Windows/OfficeHours for upcoming dates (and the ability to add this event to your calendar).