Exchange Server
The latest Exchange Server coverage — news, analysis, and updates from the WindowsNews.AI desk.
CVE-2026-21527: Critical Exchange Spoofing Vulnerability Demands Immediate Patching
Microsoft has issued a critical security alert for Exchange Server administrators worldwide, cataloging CVE-2026-21527 as a spoofing vulnerability that requires immediate attention. While technical...
With 60 Days Left for Exchange ESU, February Patch Ramps Up Hybrid Security Overhaul
Microsoft today released the February 2026 Security Updates for Exchange Server, a cumulative rollup that covers Exchange Server Subscription Edition (SE) RTM and, under the paid Extended Security...
January Patch Tuesday: No Exchange Server Fixes Released as ESU End Nears
Microsoft's Exchange team published a short blog post on January 13, 2026 confirming that no security updates will ship for any on-premises Exchange Server version this Patch Tuesday. The...
Exchange Server Privilege Escalation Flaw Demands Immediate Patching — CVE-2025-64666
Microsoft has assigned CVE-2025-64666 to a newly patched elevation-of-privilege vulnerability in on-premises Exchange Server, and administrators who hesitate risk opening their mail systems to...
Microsoft Warns of Exchange UI Spoofing Bug That Could Lead to Admin Compromise
Late on December 9, 2025, Microsoft published a security advisory for a newly cataloged spoofing vulnerability in Microsoft Exchange Server. Tracked as CVE-2025-64667, the flaw allows an attacker to...
Enterprise AI 2025: How Hyperscalers, Consultancies & Vendors Drive Windows Adoption
The enterprise AI landscape in 2025 has undergone a fundamental transformation, shifting from experimental pilots to strategic, board-level procurement decisions that are reshaping how organizations...
Microsoft halts all Exchange security updates in November 2025, ending ESU and pushing migrations to Subscription Edition.
Microsoft's Exchange Team has confirmed a significant milestone in the evolution of Exchange Server: November 2025 will mark the first month with no security updates for any version of Exchange...
Exchange Server CU Upgrades: Essential Hybrid Security Strategy for 2024
Upgrading Exchange Server to the latest Cumulative Update has transformed from routine maintenance into a critical security imperative for organizations maintaining hybrid environments. With...
Microsoft Explores Copilot AI for Exchange Server On-Premises Deployment
Microsoft is actively gauging enterprise interest in bringing Copilot AI capabilities to on-premises Exchange Server environments, marking a significant potential shift in the company's AI strategy...
Exchange Server On-Prem Gets Copilot Interest Surveys, Testing Hybrid AI Data Control
Microsoft's ambitious plan to "Copilot all the things" has now extended to Exchange Server on-premises environments, presenting organizations with complex decisions around AI implementation, data...
Microsoft Explores Copilot AI Integration for On-Premises Exchange Server
Microsoft is actively gauging enterprise interest in bringing its Copilot AI assistant to on-premises Exchange Server environments, signaling a potential expansion of AI capabilities beyond...
Microsoft Explores Copilot for Exchange Server On-Premises: Architecture & Security
Microsoft's Exchange Team has opened a direct line to on-premises administrators with an interest survey for Copilot for Exchange Server (on-premises), signaling that Microsoft is actively exploring...