Apr 23, 2026 · Learn how Microsoft Defender SmartScreen protects against phishing or malware websites and applications, and the downloading of potentially malicious files.

Learn how Microsoft Defender SmartScreen safeguards your security in Microsoft Edge against phishing and malware sites.

May 27, 2026 · A list of all available settings for Microsoft Defender SmartScreen using Group Policy and mobile device management (MDM) settings.

Learn how to protect your device with Windows Defender SmartScreen and other app and browser control settings in Windows Security.

Find official documentation, practical know-how, and expert guidance for builders working and troubleshooting in Microsoft products.

Jul 8, 2026 · Microsoft Defender SmartScreen determines whether a downloaded app or app installer is potentially malicious based on many criteria, such as download traffic, download history, past anti …

Jan 15, 2026 · Demonstrates how Microsoft Defender SmartScreen identifies phishing and malware websites based on URL reputation.

Jan 28, 2026 · Troubleshoot unexpected Microsoft Defender SmartScreen blocks or warnings on websites and learn how to report false positives.

May 5, 2026 · Understand how Windows Defender SmartScreen reputation works, what to expect when you publish a new app, and how to minimize warnings for your users.

Apr 15, 2025 · Learn how Enhanced Phishing Protection for Microsoft Defender SmartScreen helps protect Microsoft school or work passwords against phishing and unsafe usage on sites and apps.

May 21, 2026 · Windows and Mac documentation for supported Microsoft Edge Browser policy: Configure Microsoft Defender SmartScreen to block potentially unwanted apps