Microsoft Fixes Windows Defender Crashes After Security Update
Summary
Microsoft fixed a Windows Defender issue that caused 0xc0000005 errors and scan failures on some Windows 10 and 11 systems. The fix is included in Defender signature update 1.457.236.0 or later.
Key points
- After a recent security update, some Windows 10 and 11 users experienced Defender service crashes and 0xc0000005 access violation errors.
- Quick and full scans could fail, sometimes requiring a restart of the Defender service.
- Microsoft confirmed the issue and says the fix is included in Defender Antivirus signature update 1.457.236.0 or later.
- Affected users are advised to update through Windows Update and check that the latest security intelligence update is installed.
Article Details
- Event Type
- Microsoft fixed a Windows Defender bug that caused crashes after a security update.
- Impact
- Some Windows 10 and Windows 11 systems experienced 0xc0000005 access violation errors, threat service failure messages, and failed quick or full scans; restarting the Defender service could be required. Microsoft says the fix is included in Defender Antivirus signature update version 1.457.236.0 or later.
Vendors
Products
Microsoft Defender Antimalware PlatformMicrosoft Defender is a security software designed to provide real-time protection against malware, viruses, ransomware, and spyware on Windows, macOS, Linux, Android, and iOS devices.Windows DefenderMicrosoft has fixed a bug in Windows Defender that caused access violation errors and service crashes after a recent security update on some Windows 10 and Windows 11 systems.