Feed›Malware›Bad Microsoft Defender update causes Windows crashes on scan...
MalwareCyber Insider
6.5 — HIGH

Bad Microsoft Defender update causes Windows crashes on scans

📅 19 August 2026 at 10:09 UTC📰 Cyber InsiderView original source ↗
Bad Microsoft Defender update causes Windows crashes on scans

Microsoft Defender users are reporting widespread scan failures after a recent security intelligence update, with Quick and Full scans crashing the antivirus engine and Offline scans reportedly freezing near completion. Reports from system administrators, home users, and Microsoft’s support forum indicate the issue is tied to recent Defender updates rather than malware compromising affected PCs. … The post Bad Microsoft Defender update causes Windows crashes on scans appeared first on CyberInsider.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

A recent Microsoft Defender update caused widespread scan failures on Windows systems, resulting in crashes and timeouts during scans. The issue was resolved with the installation of a newer Security Intelligence Update version.

⚙️Technical Details
💥Impact Assessment
Severity: High
Who Is at Risk
Microsoft Defender users on Windows 10 and Windows 11, including home users and enterprise environments through Defender for Endpoint.
🛡️Recommended Actions
1Run Windows Update to verify that Defender's Security Intelligence version has reached 1.457.236.0 or newer.
2Check the installed versions with PowerShell using Get-MpComputerStatus.
3Use MpCmdRun.exe utility to remove dynamic signatures and request a fresh update.
📦Affected Products
Product Name: Microsoft DefenderProduct Version: 1.457.236.0 or newer

Read the full article

This is a curated summary. The complete article is available at Cyber Insider.

Read on Cyber Insider ↗
← Back to feed