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1. Microsoft Security Copilot Dynamic Threat Detection Agent: AI-powered security analysis for Microsoft Defender
   The Microsoft Security Copilot Dynamic Threat Detection Agent is an AI-powered backend service that automatically detects hidden threats in Microsoft Defender XDR and Microsoft Sentinel environments. Announced at Microsoft Ignite 2025 and now available in public preview, this always-on agent uses artificial intelligence to identify security gaps that traditional rule-based detection systems miss.

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2. New features in Windows 11 Build 26220.7523 (KB5072043): Agent Launchers, Ask Copilot on the taskbar, and more
   Microsoft released Windows 11 Insider Preview Build 26220.7523 (KB5072043) to the Dev and Beta Channels on December 19, 2025. This update for version 25H2 introduces Ask Copilot as an opt-in feature that complements traditional Windows Search on the taskbar, introduces system-wide AI agent infrastructure, and delivers improvements to accessibility, File Explorer, and core system components.

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3. Windows 11 Store CLI: Install Microsoft Store apps with the store command from the Command Prompt or PowerShell
   Windows 11 includes a command-line tool, Store CLI, that lets you search for, install, list, and update Microsoft Store applications directly from Command Prompt or PowerShell. The Store CLI provides an alternative to the graphical Microsoft Store interface and offers distinct capabilities compared to the Windows Package Manager (winget).

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4. Hardware-accelerated BitLocker encryption using SoC crypto engines in Windows 11
   Microsoft introduced hardware-accelerated BitLocker to address the performance overhead of disk encryption on modern high-speed NVMe drives. This feature offloads cryptographic operations from the main CPU to dedicated crypto engines in the system-on-chip (SoC), improving performance and enhancing security.

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5. Total Network Inventory: The all-in-one solution for IT Asset auditing
   Softinventive Lab Total Network Inventory (TNI) is a network auditing and inventory management solution designed for managing IT assets across organizations. The software enables administrators to scan Windows, macOS, Linux, FreeBSD, and ESXi-based systems, including computers, servers, and network devices.

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6. Microsoft Message Queuing (MSMQ) bug breaks Windows and IIS: Insufficient resources to perform operation (0x80004005)
   Message Queuing (MSMQ) is a Microsoft technology that lets applications communicate asynchronously by sending messages to queues, enabling them to run at different times and even when systems or networks are temporarily offline. Microsoft's December 2025 security update disrupted Message Queuing functionality on Windows 10 and Windows Server systems, causing enterprise applications and IIS sites to fail. Users may receive the error message: Insufficient resources to perform operation (0x80004005).

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7. Exchange Online to block legacy ActiveSync clients in 2026
   Microsoft announced that Exchange Online will block devices using Exchange ActiveSync protocol versions earlier than 16.1 from connecting to its services starting March 1, 2026. This change affects organizations using mobile devices with native email applications to access Exchange Online mailboxes and aims to strengthen security and reliability across the platform. Clients using basic authentication for an affected protocol will be unable to connect to Exchange Online and will receive an HTTP 401 error stating "bad username or password."

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8. Microsoft to block unauthorized scripts in Entra ID logins with 2026 CSP update
   Microsoft is enforcing stricter Content Security Policy (CSP) for Entra ID authentication, blocking unauthorized scripts from executing during sign-in. Organizations using browser extensions or third-party tools that inject scripts into login.microsoftonline.com must identify and replace these tools before enforcement, as they will stop functioning while users can still sign in successfully.

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9. Windows 365 AI-enabled Cloud PC vs. Copilot+ PC
   Microsoft has introduced Windows 365 AI-enabled Cloud PCs, a new cloud-based computing solution that delivers AI-powered Windows experiences to any device. This offering differs significantly from Copilot+ PCs, which are physical computers with specialized AI hardware. This article compares the technical specifications, requirements, and capabilities of both platforms.

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10. Windows Server 2025 introduces native NVMe support with performance gains of up to 80 percent
    Microsoft has released native Non-Volatile Memory Express (NVMe) support for Windows Server 2025, delivering performance improvements of up to 80 percent in IOPS and delivering a 45 percent savings in CPU cycles per I/O compared to Windows Server 2022.

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