Microsoft is working to address an ongoing Exchange Online outage that is preventing customers from accessing their mailboxes and calendars. [...]

​Microsoft has removed the Samsung Galaxy Connect app from the Microsoft Store because it was causing issues on specific Samsung Galaxy Book 4 and desktop models running Windows 11. [...]

Microsoft has released an out-of-band (OOB) update to fix a security vulnerabilities affecting Windows 11 Enterprise devices that receive hotpatch updates instead of the regular Patch Tuesday cumulative updates. [...]

Microsoft is investigating a new issue affecting some Samsung laptops running Windows 11 after installing the February 2026 security updates, in which users lose access to their C:\ drive and are unable to launch applications. [...]

​Microsoft is investigating several issues causing email synchronization and connection problems when using the classic Outlook desktop client. [...]

Microsoft has released the Windows 10 KB5078885 extended security update to fix the March 2026 Patch Tuesday vulnerabilities, including 2 zero-days and an issue that prevent some devices from shutting down. [...]

Today is Microsoft's March 2026 Patch Tuesday with security updates for 79 flaws, including 2 publicly disclosed zero-day vulnerabilities. [...]

Microsoft has released Windows 11 KB5079473 and KB5078883 cumulative updates for versions 25H2/24H2 and 23H2 to fix security vulnerabilities, bugs, and add new features. [...]

Microsoft is rolling out passkey support for Microsoft Entra on Windows devices, adding phishing-resistant passwordless authentication via Windows Hello. [...]

Microsoft says an Exchange Online issue that mistakenly quarantined legitimate emails last week was triggered by faulty heuristic detection rules designed to block credential phishing campaigns. [...]

Microsoft says a Microsoft 365 Copilot bug has been causing the AI assistant to summarize confidential emails since late January, bypassing data loss prevention (DLP) policies that organizations rely on to protect sensitive information. [...]

​Microsoft is working to resolve an ongoing outage affecting Microsoft Teams users, causing delays and preventing some from accessing the service. [...]

Microsoft says it has resolved a Windows 11 bug that caused some commercial systems to fail to boot with an "UNMOUNTABLE_BOOT_VOLUME" error after installing recent security updates, with the fix delivered in the February 2026 Patch Tuesday update. [...]

Microsoft has fixed a "remote code execution" vulnerability in Windows 11 Notepad that allowed attackers to execute local or remote programs by tricking users into clicking specially crafted Markdown links, without displaying any Windows security warnings. [...]

The AgreeTo add-in for Outlook has been hijacked and turned into a phishing kit that stole more than 4,000 Microsoft account credentials. [...]

Microsoft has announced Windows 11 26H1, but it's not for existing PCs. Instead, it will ship on devices with Snapdragon X2 processors and possibly other rumored ARM chips.w [...]

Microsoft has released the Windows 10 KB5075912 extended security update to fix February 2026 Patch Tuesday vulnerabilities, including six zero-days, and continue rolling out replacements for expiring Secure Boot certificates. [...]

Today is Microsoft's February 2026 Patch Tuesday with security updates for 58 flaws, including 6 actively exploited and three publicly disclosed zero-day vulnerabilities. [...]

Microsoft has released Windows 11 KB5077181 and KB5075941 cumulative updates for versions 25H2/24H2 and 23H2 to fix security vulnerabilities, bugs, and add new features. [...]

Microsoft has begun rolling out updated Secure Boot certificates through monthly Windows updates to replace the original 2011 certificates that will expire in late June 2026. [...]