Microsoft integrates Teams with Defender for Office 365, enabling security admins to block external users directly from the Microsoft Defender portal using the Tenant Allow/Block List. This centralized security management feature rolls out in January 2026, supporting up to 4,000 domains and 200 email addresses with automatic blocking across chats, meetings, channels, and calls.

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Microsoft has introduced the new Group Policy RemoveMicrosoftCopilotApp that allows IT administrators to uninstall the Microsoft Copilot app on managed Windows 11 devices. However, the uninstall option has several specific requirements and limitations you need to understand before attempting to remove Copilot from your Windows.

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Windows 11 Insider Preview Build 26220.7535 (KB5072046) is now available for both Dev and Beta Channels. This release extends AI-powered accessibility features to supported devices running this Insider build, expanding availability beyond just Copilot+ PCs, and provides developers with expanded integration options for cross-device application continuity.

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Microsoft Copilot Studio is a low-code platform that lets you build, customize, and manage AI agents without extensive programming knowledge. The platform provides a graphical interface for creating intelligent agents in natural language that handle conversations and automate tasks across Microsoft Teams, Microsoft 365 Copilot, websites, mobile apps, and third-party platforms such as Facebook or Slack. To ground agents, you can integrate your organization's data sources. Recent updates have introduced enhanced AI models, improved authoring experiences, and new governance capabilities, making the platform more accessible and secure.

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The final version of Windows 11 26H1 will be a platform release tailored for next-generation ARM silicon, including Qualcomm Snapdragon X2 and, probably, NVIDIA N1X processors. Windows 11 26H1 is expected to launch around April 2026 with new ARM64 devices. Windows 11 26H1 is expected to launch around April 2026 with new ARM64 devices. This is not a feature update but rather a silicon support release focused on under-the-hood platform improvements while maintaining complete feature parity with version 25H2.

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Microsoft has indefinitely canceled the planned limit on bulk email sending in Exchange Online following significant customer feedback about operational challenges. However, Microsoft advises using Azure Communication Services for Email for organizations that require sending large volumes of email to external recipients. 

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Microsoft 365 users face a critical bug in Classic Outlook that prevents recipients from opening encrypted emails. In Classic Outlook, trying to open an encrypted email shows a specific error message in the Reading Pane: "This message with restricted permission cannot be viewed in the reading pane until you verify your credentials. Open the item to read its contents and verify your credentials." This issue stems from a client-side regression in how Classic Outlook handles encryption settings, and Microsoft is currently investigating the problem.

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Microsoft introduced the Microsoft Defender Experts Suite as an integrated security offering that combines managed extended detection and response (MXDR), incident response services, and direct access to Microsoft security advisors. Unlike purchasing these services separately, the suite provides a single unified SKU with per-user-per-month licensing and a designated security advisor who coordinates all three service components. The suite became generally available on January 1, 2026, with a promotional offer available through December 31, 2026.

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In an interview, Anthropic's Daniela Amodei suggested that AI deployments "might hit a wall because of human reasons." This post summarizes my views on the new Human Wall, based on my more detailed discussion of the interview in which Anthropic's president also touches on the outdated AGI concept, the discontinuation of exponentials, and the AI bubble.

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Microsoft will discontinue support for numerous products throughout 2026, spanning operating systems, productivity software, database platforms, and server technologies. Organizations must plan migrations and upgrades to maintain security compliance and access to critical updates.

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This is a reality check regarding Geoffrey Hinton's recent alarming warnings about AI advancing faster than expected. Having used all frontier models extensively in my daily work, I believe his worries are misplaced, mainly because he overvalues LLMs' abilities. The supposed exponential AI advancement we were promised simply hasn't materialized. Below, I summarize the key points of a longer article. You can read the entire article here: Hinton’s AI Progress Illusion: An IT Reality Check.

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Microsoft will transition Microsoft Entra identity services from DigiCert Global Root G1 to G2 certificates on January 7, 2026. Organizations that do not prepare for this change risk authentication failures across their Microsoft 365 and Azure environments.

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Microsoft Entra ID introduces synced passkeys to simplify multi-factor authentication and reduce the security risks associated with traditional methods such as passwords and SMS codes. This feature, announced at Microsoft Ignite 2025, enables users to authenticate with biometrics or device PINs without entering passwords when syncing credentials across devices via cloud-based passkey providers. The implementation also includes high-assurance account recovery using government-issued ID verification to restore access when users lose all authentication methods.

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ManageEngine DEX Manager Plus is a cloud-based digital employee experience management platform designed to continuously understand, measure, and improve how employees interact with their digital workplace. By combining endpoint telemetry, experience analytics, proactive issue identification, and guided remediation, it enables IT teams to ensure reliable performance, minimize disruptions, and deliver a consistently productive and frustration-free employee experience.

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Organizations running modern data centers increasingly need flexible storage architectures that balance performance, resiliency, and investment protection. With Windows Server 2022 and Windows Server 2025, Microsoft now enables true S2D and SAN coexistence—allowing Storage Spaces Direct (S2D) to operate alongside traditional SAN storage within the same failover clustering environment. This mixed-storage approach lets IT teams optimize workloads such as Hyper-V, SQL Server, and file services by combining high-performance local storage with existing enterprise SAN infrastructure, all while maintaining full cluster support and operational consistency.

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The Azure Developer CLI (azd) December 2025 release delivers substantial improvements centered on extension capabilities and developer workflow enhancements. The update introduces a powerful extension framework with custom configuration properties, support for interactive mode via Text User Interfaces, and distributed tracing for improved observability. User experience improvements include an interactive environment selector, faster provisioning progress updates with polling reduced from 10 seconds to 3 seconds, and clearer error messages for configuration issues. The release also adds flexible configuration options, such as support for azure.yml as an alternative filename and integrated access to the template gallery within initialization commands. Additionally, the update includes comprehensive bug fixes for Container Apps, Azure Pipelines, and deployment workflows, along with Microsoft Foundry rebranding throughout the platform.

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Microsoft offers organizations two on-premises options for email and collaboration: Microsoft 365 Local and Exchange Server Subscription Edition (Exchange SE). While both solutions deliver on-premises productivity capabilities, they differ fundamentally in architecture, scope, and target use cases.

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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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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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