Microsoft has released Windows 11 KB5124010 to the Release Preview channel for versions 24H2 and 25H2, with builds 26100.9539 and 26200.9539. The update adds Emoji 17.0 and several usability improvements, but administrators will pay closest attention to Wi-Fi reuse in WinRE, new recovery management support, and the removal of PC-to-PC Migration from Windows Backup.

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Microsoft is warning IT administrators not to wait for VBScript removal to disrupt Windows activation automation. Organizations that still rely on `slmgr.vbs` should begin moving critical workflows to PowerShell, using Microsoft’s newer activation module where it is supported.

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Microsoft has restored Domain Exclusion for Microsoft 365 Copilot after removing it during an August rollout. The feature lets IT administrators block up to 1,000 domains from Copilot’s public web grounding, limiting which external sites can influence generated answers.

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Microsoft’s September 2026.NET servicing release updates supported.NET runtimes to 10.0.12, 9.0.20, and 8.0.31 while addressing eight security vulnerabilities. The same cycle also patches.NET Framework on Windows 11, including a remote code execution flaw shared with modern.NET versions.

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.NET 11 Release Candidate 1 is now available with a go-live support license, making it suitable for production workloads before the final release. The first RC also works with Visual Studio 2026 Insiders and Visual Studio Code with the C# Dev Kit, giving teams a supported path to test upgrades and deployment pipelines.

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Microsoft released cumulative updates KB5124008 and KB5122880 on September 8, 2026, as part of the September Patch Tuesday cycle. KB5124008 targets Windows 11 versions 24H2 and 25H2 and raises the OS build to 26200.9445 or 26100.9445. KB5122880 targets version 23H2 and raises the build to 22621.7582. Both packages deliver mandatory security fixes, but KB5124008 also rolls in the non-security changes from the August preview update KB5120998, including several user interface and platform features worth planning for.

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ToolHive gives administrators a self-hosted way to run Model Context Protocol (MCP) servers without placing third-party connectors directly on their machines. The Apache 2.0 platform isolates each server in a container, while its registry, gateway, identity controls, and audit features provide a management layer for AI tools such as Cursor and Claude Code.

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Windows 11 is rolling out a long-requested fix that lets users shut down or restart immediately, even when an update has already downloaded. Microsoft now keeps standard power actions separate from update actions, while also testing broader controls to skip updates during setup and pause them repeatedly.

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Microsoft has started rolling out expanded Windows Autopatch controls that let administrators approve, defer, or pause both Windows updates and Quick machine recovery fixes. The changes arrive as Windows 11 26H2 approaches, following plans to enable 26H2’s Point-in-Time Restore by default on eligible systems.

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