authentication

Several thousand Microsoft Outlook users were left locked out of their mailboxes on July 9–10, 2025 after an authentication-related service incident that disrupted Outlook on the web, mobile apps and desktop clients — an outage Microsoft traced to a recent change and addressed with targeted...

Microsoft's decision to ship Windows in a "secure-by-default" state by disabling NTLM (NT LAN Manager) authentication by default marks one of the most consequential shifts in Windows security policy in decades, and it will force enterprises to confront years of legacy dependencies or accelerate...

Microsoft’s long-running allowance for NTLM-based authentication is finally being reworked into history: the company has laid out a phased plan to clamp down on Network NTLM and push Windows environments toward Kerberos-first authentication, a move that promises real security gains but will...

On November 10, 2025, a short thread on the DesignTAXI community — asking simply “Is Microsoft Copilot down?” — surfaced amid a small wave of user reports and confusion, but multiple independent monitoring services and incident records show no widespread Copilot outage at that time; the signals...

Thousands of Microsoft customers worldwide woke to interrupted workflows and unreachable portals on October 29 after a configuration error in Microsoft’s edge network knocked Azure and Microsoft 365 services offline for hours, forcing emergency rollbacks, traffic failovers and a frantic scramble...

Millions of users and thousands of businesses worldwide were knocked offline for hours after a widespread Microsoft outage tied to Azure Front Door left Azure, Microsoft 365, Outlook, Teams, Xbox and other services unreachable or sluggish on October 29–30, 2025, exposing how a single...

Microsoft has confirmed that a recent wave of cumulative updates has been linked to widespread login and recovery failures across multiple Windows versions, with the October servicing rollup in particular producing a cluster of regressions that affect sign‑in, the Windows Recovery Environment...

Remote Desktop refusing a perfectly good Microsoft Account login is one of those small, infuriating failures that can derail a maintenance window or a work session in seconds: you type the correct email and password, expect the remote desktop to appear, and instead get the blunt message “Your...

Azure’s Data API Builder (DAB) is the kind of developer tool that quietly changes the rules of engagement: it turns an existing database into a production-ready HTTP API — both REST and GraphQL — with no custom backend code required, letting you “bring your data to your code” without building or...

Microsoft's September Patch Tuesday delivers a heavy dose of security fixes for both Windows 10 and Windows 11 — including two publicly disclosed zero-days — but reserves the most visible user-facing improvements for Windows 11, reinforcing that Windows 10 is now in its final maintenance phase...

Problem Summary The Samba server on Debian Trixie did not appear automatically in Windows Network Explorer, unlike on Armbian Bookworm + OMV which appeared directly and prompted for credentials. Root Cause Analysis Environmental Differences: Windows 11 24H2 (OS build 26100.6584) Debian: Samba...

Microsoft has published advisory guidance tied to CVE‑2025‑55234 that focuses less on a new exploitable bug and more on enabling administrators to find and measure exposure to SMB relay‑style elevation‑of‑privilege attacks before they flip stronger hardening controls. The short form: the SMB...

Microsoft’s security advisory for CVE-2025-53809 warns that improper input validation in the Windows Local Security Authority Subsystem Service (LSASS) can be abused by an authorized attacker to cause a denial of service (DoS) over a network, putting authentication services and domain...

Microsoft’s advisory that an improper authentication vulnerability in Windows NTLM can let an authenticated actor elevate privileges over the network is the latest warning flag in a year already crowded with NTLM-related incidents and active exploitation chains. The vendor entry the user...

Microsoft’s advisory for CVE-2025-54895 warns that an integer overflow or wraparound in the SPNEGO Extended Negotiation (NEGOEX) security mechanism can be triggered by an authorized local actor to elevate privileges, turning a legitimate local account into a pathway to SYSTEM-level control if...

Microsoft Copilot experienced a measurable service disruption on September 8, 2025, with hundreds of user reports and outage-tracking spikes starting around 8:05 PM Eastern Time — community monitoring and real‑time trackers flagged the issue and users were advised to try alternate Copilot entry...

Microsoft has confirmed a second phase of mandatory multifactor authentication (MFA) that extends enforcement from Azure’s web admin consoles into the Azure Resource Manager (ARM) control plane — covering Azure CLI, Azure PowerShell, REST management APIs, mobile clients and...

A publicly exposed appsettings.json file that contained Azure Active Directory application credentials has created a direct, programmatic attack path into affected tenants — a misconfiguration that can let attackers exchange leaked ClientId/ClientSecret pairs for OAuth 2.0 access tokens and then...

Microsoft has quietly begun to reshape the sign‑in moment and a few long‑standing UI friction points in Windows 11, shipping a Beta/Canary preview that modernizes Windows Hello, refines the taskbar and system tray, and adds practical productivity shortcuts to Task Manager and jump lists —...

Security researchers have observed a coordinated, large‑scale reconnaissance campaign probing Microsoft Remote Desktop services that began as a sudden one‑day spike and escalated into a torrent of scans — a pattern that looks less like opportunistic background noise and more like deliberate...