Is Microsoft Defender crashing on your PC? A bad update is breaking scans
A recent update to Microsoft Defender is causing both Full and Quick Scan functions to crash on some Windows 11 PCs, preventing users from completing security scans and potentially leaving systems vulnerable. The issue was first reported on Reddit by user Huynh_Jovi, with multiple users confirming they experienced the same problem.
Microsoft has acknowledged the issue and released a new security intelligence patch to address the problem. The company maintains that Windows 11’s built-in security tool provides sufficient protection for most PC users, though this claim only holds when the tool functions properly. The exact scope of affected systems remains unclear from initial reports.
Users experiencing scan failures are advised to update their Microsoft Defender security intelligence to resolve the issue. This incident underscores the critical importance of security tools functioning reliably, as even temporary downtime in malware scanning capabilities could leave systems at risk of compromise.