Microsoft Teams’ August–September update gives admins a way to apply app and agent installation changes consistently across Teams, Outlook, and Microsoft 365. It also adds conversation-aware Copilot, AI-generated meeting video recaps, and new monitoring and security tools, as Microsoft shifts its feature roundups to a quarterly schedule.

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Windows settings backup is now enabled by default on eligible Microsoft Entra-joined and hybrid-joined enterprise devices upgraded to Windows 11 26H2. But restore remains off unless an administrator enables it, so the new default does not automatically recover users’ settings on replacement devices.

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Starting September 23, 2026, Microsoft signs its NuGet packages with a new X.509 author-signing certificate. If you enforce a NuGet client policy with trusted signers in nuget.config or check packages with dotnet nuget verify, package installations can fail with error NU3034 until you add the new certificate fingerprint. This article explains how to find out whether you are affected, where to look for nuget.config files, and how to update your trusted signers and verification scripts. Everyone else can install Microsoft packages as before.

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CISA has warned that a pre-authentication flaw in MikroTik RouterOS can let an unauthenticated attacker run code as root or knock a device offline with one crafted HTTP request. The alert lands days after CISA first put MikroTik RouterOS on its exploited-vulnerabilities list, but this new advisory spells out the bug as an integer underflow in the web-management service and says there is no evidence of active exploitation yet.

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Microsoft has started rolling out Windows 11 26H2, and the good news for administrators is that Microsoft currently lists no active upgrade-blocking issues. Even so, the release health page still shows three recently mitigated problems that can affect post-install stability: USB audio failures, broken trust relationships on some domain-joined devices, and black screens in certain virtual desktop setups.

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Microsoft has started broadly releasing Windows 11 version 26H2, the 2026 feature update that arrives as a lightweight enablement package rather than a full rebuild. Eligible PCs on Windows 11 25H2 or 24H2 should get a quick install, with support lifecycles reset and no new compatibility issues to worry about.

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Google will end regular ChromeOS updates and security patches in mid-2034, potentially cutting short support for some Chromebooks. ChromeOS is the existing operating system for Chromebooks, while Googlebook OS is a new Android-focused platform designed for Googlebook laptops. The company now says many newer models will be eligible to move to Googlebook OS, introduced with Googlebooks launching October 4.

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UniGetUI 2026.3.0 makes Windows software maintenance more hands-off by adding per-app automatic updates and scheduled installation windows. The graphical package-manager front end, previously covered as a way to manage WinGet, Chocolatey, and PowerShell Gallery packages, now gives users tighter control over which applications update and when.

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Microsoft plans to deprecate the Windows Deployment Services (WDS) server role, including its Preboot Execution Environment (PXE) boot functionality, starting with the next Windows Server release. WDS continues to work on Windows Server 2025 and earlier, but you should begin planning a migration now. This article explains what the deprecation covers and evaluates the alternatives Microsoft names: the Configuration Manager PXE responder without WDS, non-Microsoft PXE solutions, and UEFI HTTP(S) Boot. It also covers Windows Autopilot for new devices and the planning steps Microsoft recommends.

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Microsoft has confirmed that recent Windows 11 updates can prevent the desktop from loading, particularly on Azure Virtual Desktop hosts using FSLogix. The issue expands the problems previously reported with KB5120998’s black wallpapers and broken cursor settings, with affected users now seeing black screens and Explorer crashes after signing in.

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Microsoft has released a public preview of auto-generated Power Platform API command groups in Microsoft Power Platform CLI, the pac command-line tool for administering Power Platform. The preview adds more than 200 commands across 15 command groups generated directly from the Power Platform API specification instead of being written by hand. This article explains what Power Platform is, how the generated commands work, which admin scenarios they unlock, and how to get started.

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Eclypsium’s latest InfraTrust report warns that attackers are increasingly targeting management consoles rather than the firewalls, switches, and routers they control. The September report tracked 158 advisories across 17 vendors, including 71 remotely exploitable flaws requiring no authentication—an escalation from the initial InfraTrust risk database launched in July.

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Microsoft has confirmed that Windows 11 KB5124010 does not include the WinRE Wi-Fi enhancement previously announced for the update, despite earlier reports that KB5124010 would let WinRE reuse saved Wi-Fi profiles. The feature will arrive later, so administrators should not expect it in the October 13 Patch Tuesday release.

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Microsoft announced the general availability of user-initiated provisioning for Windows 365 Reserve. Windows 365 Reserve is a business continuity service that gives employees short-term access to a Cloud PC, a virtualized Windows desktop hosted in Microsoft's cloud, when their primary work device is unavailable. With this feature, eligible users can start provisioning their own Reserve Cloud PC directly from the Windows App instead of waiting for IT. You control the capability through a Windows App setting in Microsoft Intune and scope it to Microsoft Entra ID user groups.

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Windows 11 KB5124010 is now available as an optional, non-security preview for versions 24H2 and 25H2, advancing them to builds 26100.9550 and 26200.9550 ahead of the October 2026 release. It continues the customization and management rollout introduced in the September 2026 Windows 11 update, but adds broader File Explorer, accessibility, recovery, Bluetooth, and Copilot changes.

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Microsoft has released Windows Admin Center version 2610 as a public preview. The headline change is a combined installer that covers both Administration Mode (aMode) and Virtualization Mode (vMode). The preview also adds Azure Arc onboarding, backup and restore, and certificate lifecycle management to vMode, plus a redesigned Azure registration experience. At the same time, Microsoft removed the preview VM Conversion tool for VMware migrations because of a change at Broadcom.

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Microsoft Edge is getting an opt-in autolaunch experience for managed Windows devices in November 2026. Users will be able to decide whether Edge starts when they sign in, while administrators can enforce startup, block it, or allow individual choice through policy.

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An AI-assisted intelligence report falsely identified cargo on a Chinese ship in the Middle East as components of a nuclear weapons program. The error nearly led the US military to intercept the vessel during the war with Iran, with armed personnel preparing to board and military aircraft already airborne. The incident highlights the risks of using chatbots in military intelligence without clear safeguards, review procedures, and accountability.

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Microsoft has released Desired State Configuration (DSC) v3.3.0, the latest version of its cross-platform configuration management platform. DSC lets you describe the desired state of a Windows or Linux system in a YAML or JSON configuration document and then apply, verify, or export that state with the dsc command-line tool. Version 3.3.0 adds three built-in Windows resources, a registry-backed adapter, wider --what-if support, new expression functions, and Linux packages on Microsoft's package repository. The release follows DSC v3.2.0: new Windows resources, version pinning, and Bicep integration, which introduced the first wave of built-in Windows resources.

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