windows defender

If your PC feels sluggish, the program you installed to keep it safe could be doing more harm than good. Background / Overview Antivirus software is one of the first things many people install on a new Windows PC. It promises constant protection — real‑time scanning, web and download filtering...

Microsoft has quietly shipped KB4052623 — an official platform update for Microsoft Defender Antivirus — that closes a widely reported scan‑skip bug while also adding a set of consequential platform changes administrators must understand before deploying it broadly. Background Shortly before...

Midcontinent Independent System Operator (MISO) has announced a strategic collaboration with Microsoft to build a cloud‑native, AI‑enabled unified data platform intended to accelerate transmission planning, improve real‑time situational awareness, and help the Midwest grid absorb surging...

Turning off Windows Security on a modern PC is something that should trigger more caution than curiosity: for most people in 2026 it remains a risky move, useful only in very narrow, controlled scenarios and never as a casual performance tweak or "clean" troubleshooting shortcut. Background...

Windows Security (Microsoft Defender) gives you multiple fast ways to scan just the folders you care about — from a single right‑click in File Explorer to scripted, enterprise‑grade scans — and understanding each method, its limits, and the operational trade‑offs can save time and prevent...

Set Up Controlled Folder Access to Stop Ransomware (and Allow Trusted Apps) Difficulty: Intermediate | Time Required: 15 minutes Controlled Folder Access (CFA) is a built-in Windows security feature designed to stop ransomware and other untrusted apps from silently modifying your important...

A growing number of Windows 11 users have reported that Microsoft Defender’s virus definitions stopped advancing after November 19, 2025 — a problem that can leave endpoints exposed if left unchecked. Reports surfaced in Chinese and international tech outlets and were confirmed by hands‑on...

A MakeUseOf writer’s deliberate experiment — uninstalling every third‑party antivirus on a Windows PC and relying solely on Microsoft Defender — produced a counterintuitive result: faster boot times, lower idle resource use, fewer nuisance alerts and no obvious infections during the test period...

I uninstalled my third‑party antivirus and — to my surprise — my PC felt faster, quieter, and no less protected; that small, impulsive change forced me to reassess a widely held belief: that piling an extra security vendor on top of Windows is always safer than trusting the built‑in stack. The...

EDR-Redir V2 is the latest proof‑of‑concept tool to exploit Windows’ new bind link facility and the cloud filter stack to create parent‑level filesystem redirections that can blind Endpoint Detection and Response (EDR) products — including a demonstrated bypass of Windows Defender on Windows 11...

If you believe the single biggest security problem for Windows is the next malware strain or a clever phishing campaign, think again — the far more dangerous factor is the set of widely repeated security myths that lull users into bad habits and create predictable attack surfaces attackers love...

I ran a full scan with Microsoft Defender on my PC and it found the file AppData\Roaming\secure\QtWebKit4.dll (Trojan:Win32/Wacatac.C!ml). But before using Defender, I had run a full scan with Malwarebytes Free and Kaspersky Free and found nothing. Why did it detect this now? Is this type of...

OpenText’s Core Threat Detection and Response has taken a significant step toward tighter Microsoft alignment, with expanded integrations that position the product as a first‑class partner for Defender for Endpoint, Microsoft Entra ID (identity), and Microsoft Security Copilot—delivered through...

Defender is present in the taskbar and system tray, and Task Manager says it's running, but when I click on it on the taskbar, it doesn't maximize. I've also tried cycling through windows using Task View, which also shows it's open, but, again, clicking on it does not bring it up like a normal...

Microsoft’s role as both the maker of Windows and an increasingly powerful security software vendor is reshaping the economics, engineering and trust model of the MSP security market — and the implications are now impossible for partners to ignore. Background The debate was center stage at a...

For years the reflex was simple: buy a third‑party antivirus suite and assume you were safer — but the calculus has shifted. A growing number of users and reviewers now say you can reasonably ditch paid antivirus software and rely on the built‑in protections in Windows Security (Microsoft...

Enable Controlled Folder Access & Whitelist Apps to Protect Against Ransomware (Win10/11) Difficulty: Intermediate | Time Required: 15 minutes Introduction Ransomware encrypts or locks your files and demands payment to restore them. Controlled Folder Access (CFA) is a built‑in Windows Defender...

Windows’ built‑in protection is usually a silent, helpful bodyguard — but when Microsoft Defender (Windows Security) quarantines or removes a file you know is safe, it can suddenly become a workflow blocker. This guide explains why Defender removes files, how to safely prevent automatic...

Consumer Reports has formally urged Microsoft to extend free support for Windows 10, warning that tens — possibly hundreds — of millions of still-working PCs will be left exposed when mainstream updates and security patches stop on October 14, 2025. The advocacy group’s letter to Microsoft’s CEO...

Windows’ built‑in antivirus has quietly become the practical choice for millions of users, and the recent pushback against paid suites is no accident — the free Windows security stack now combines deep OS integration, modern cloud and AI detections, and targeted anti‑ransomware controls that...