Microsoft has rolled out a server-side fix for a recent Classic Outlook problem that prevented some users from sending messages through Outlook.com. The issue caused non-delivery warnings and error codes for affected accounts, and the company says the change has been in production as of April 3, 2026. What happened Some Classic Outlook users received non-delivery reports (NDRs) with error
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Researcher Publishes Windows Defender 0-Day ‘BlueHammer’ LPE Proof‑of‑Concept
A security researcher using the handle Chaotic Eclipse has publicly released a working proof‑of‑concept for a Windows zero‑day local privilege escalation (LPE) exploit called “BlueHammer.” The disclosure, accompanied by full source code on GitHub, was confirmed as functional by vulnerability researcher Will Dormann and demonstrates that a low‑privileged local user can escalate to NT AUTHORITYSYSTEM on affected machines. The release
Microsoft removes Support and Recovery Assistant from Windows — what it means
Microsoft has removed the Support and Recovery Assistant (SaRA) from Windows, according to recent reports. Once a handy troubleshooting companion for Office and other Microsoft products, SaRA helped users diagnose and fix a variety of common issues. Its absence changes the options available to end users and IT teams when problems arise, but there are practical alternatives and steps you
Announcing General Availability of Server Logic in Power Pages
Power Pages has taken a significant step forward: Server Logic is now generally available for production use. What began as a preview capability to bring server-side processing closer to makers and developers has matured into a production-ready feature designed for enterprise scenarios. With this GA release, organizations gain a native, governed, and extensible way to run server-side operations directly within
Microsoft Links Medusa Ransomware Affiliate to Zero-Day Exploitation Campaign
Microsoft’s recent analysis tying a Medusa ransomware affiliate to a campaign that leveraged zero-day vulnerabilities has put a renewed spotlight on the evolving tactics of extortion groups and the threat posed by previously unknown software flaws. For security teams and executives, the announcement is a reminder that threat actors are combining rapid vulnerability exploitation with tried-and-true ransomware playbooks to increase
Anthropic opens Microsoft 365 connectors to all Claude plans — what it means for users
Anthropic has quietly broadened access to one of Claude’s most practical integrations: the Microsoft 365 connector. Once reserved for Team and Enterprise subscribers, the connector is now available across every Claude plan — including the free tier — enabling Claude to read and search content stored in Outlook, OneDrive, SharePoint, Teams and Calendar for users tied to an organization’s Microsoft