Security intelligence updates for Microsoft Defender Antivirus and ...
Download the latest security intelligence updates for Microsoft Defender Antivirus, Microsoft Security Essentials (MSE), System Center Endpoint Protection (SCEP) and other antimalware.
Microsoft Defender Antivirus security intelligence and product …
Keeping Microsoft Defender Antivirus up to date is critical to assure your devices are protected against new malware and attack techniques. Update your antivirus protection, even if …
Microsoft Defender update for Windows operating system …
This package includes monthly updates and fixes to the Microsoft Defender antimalware platform and engine that is used by Microsoft Defender Antivirus in Windows 11.
Manage how and where Microsoft Defender Antivirus receives …
Oct 21, 2019 · See Manage Microsoft Defender Antivirus updates and apply baselines article for an overview on how updates work, and how to configure other aspects of updates (such as …
Schedule Microsoft Defender Antivirus protection updates
Oct 20, 2025 · Schedule the day, time, and interval for when protection updates should be downloaded
Microsoft Update Catalog
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Microsoft Update Catalog
If you have a pop-up blocker enabled, the Update Details window might not open. To open the Update Details window, configure your pop-blocker to allow pop-ups for this Web site.
Microsoft Update Catalog
If you have a pop-up blocker enabled, the Update Details window might not open. To open the Update Details window, configure your pop-blocker to allow pop-ups for this Web site.
Microsoft Defender Antivirus on Windows Server
Oct 22, 2025 · This article describes how to enable the user interface, install or reinstall Microsoft Defender Antivirus, verify that Microsoft Defender Antivirus is running, and update your …
Microsoft Update Catalog
If you have a pop-up blocker enabled, the Update Details window might not open. To open the Update Details window, configure your pop-blocker to allow pop-ups for this Web site.