Microsoft Defender update for Windows operating system ...

This document describes the Offline Security Intelligence Update feature of Microsoft Defender for Endpoint on Linux.

2023年7月10日 — To resolve the issue of unsuccessful virus definition updates for Windows Defender on Windows Server 2019, you can try the following steps.

Describes the steps to manually download the latest virus and spyware definition updates for Microsoft Security Essentials.

2023年11月10日 — Within the Settings app, you can access a Windows Security facility with this selection sequence: Start > Settings > Update & Security > Windows ...

A manually triggered update immediately downloads and applies the latest security intelligence. This process might also address problems with automatic updates.

Describes a Windows Defender update package for Windows Server 2019, Windows Server 2016, and Windows 10.

This package will help you install the latest Windows Defender definition updates. Windows Defender is a free program that helps protect your computer.

2023年1月27日 — You can download the security intelligence updates as an offline installer from here: https://www.microsoft.com/en-us/wdsi/defenderupdates

2020年9月5日 — You may download updated definitions manually using another PC and transfer them to PC without Internet using external drive.