Defender & ASR

ASR False Positives Blocking Legitimate Apps – How to Fix Safely

Defender & ASR /

Problem Attack Surface Reduction (ASR) rules are designed to block malicious behaviour, but in real enterprise environments they frequently trigger false positives that block legitimate applications. Common symptoms include: Because ASR operates at the behaviour level, legitimate enterprise software often looks suspicious. This guide explains why false positives happen, how to identify the exact rule […]

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ASR Rule Blocking EXE Installs – How to Identify Which Rule Is Responsible

Defender & ASR, Intune & Endpoint Fixes /

Problem Attack Surface Reduction (ASR) rules are designed to block malicious behaviour, but in real-world Intune environments they frequently block legitimate EXE installers. Common symptoms include: From the Intune admin side, everything looks correct — assignments, packaging, detection rules — yet the application simply never installs. This guide walks through how to definitively identify which

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