The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The following files are available for download from the Microsoft Download Center:Īll supported x86-based versions of Windows 8.1Īll supported 圆4-based versions of Windows 8.1Īll supported x86-based versions of Windows 8Īll supported 圆4-based versions of Windows 8įor more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:ġ19591 How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. This update is available from Windows Update. Update information How to obtain this update Windows Update This update also fixes a Windows Defender deadlock issue that is fixed in hotfix 2950183. UI improvements to the anti-malware platform Performance improvements to the anti-malware platform

Hardening improvements to the anti-malware platform This anti-malware platform update contains the following improvements:

Microsoft regularly releases anti-malware platform updates to guarantee consistency in protection, performance, robustness, and usability in a malware landscape that is constantly changing. This anti-malware platform update for Windows Defender updates Windows Defender services, drivers, and UIs.

Windows defender download windows 8.1