Download Microsoft Security Essentials from Official Microsoft Download Center

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Microsoft Security Essentials

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DirectX End-User Runtime Web Installer
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ZHCN\amd64\MSEInstall.exe

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ZHCN\x86\MSEInstall.exe

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Microsoft Download Manager

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Generally, a download manager enables downloading of large files or multiples files in one session. Many web browsers, such as Internet Explorer 9, include a download manager. Stand-alone download managers also are available, including the Microsoft Download Manager.

if you do not have a download manager installed, and still want to download the file(s) you've chosen, please note:

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The Microsoft Download Manager solves these potential problems. It gives you the ability to download multiple files at one time and download large files quickly and reliably. It also allows you to suspend active downloads and resume downloads that have failed.

Microsoft Download Manager is free and available for download now.

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Microsoft Security Essentials 可以为家庭或小型企业中的计算机提供实时保护，防御受病毒、间谍软件以及其他恶意软件的攻击。