microsoft security essential for windows 8.1 laptop

Pls tell me how to download Microsoft security essential for Windows 8.1 laptop

It  is 64 bit.

Note: tell me for Windows 8.1. Not for  Windows 8 

Hi,

Windows Security Essentials is NOT for Windows 8.1 and is not compatible with it..

https://support.microsoft.com/en-us/help/18869/windows-7-security-essentials-product-information

The new Windows comes with Windows Defender

Windows Defender for Windows 10, Windows 8.1, Windows RT 8.1, Windows 8, and Windows RT provides built-in protection against malware. You can't use Microsoft Security Essentials, but you don't need to—Windows Defender is already included and ready to go.

But if you’re looking to protect a PC with an older version of Windows, you can use Microsoft Security Essentials to help guard against viruses, spyware, and other malicious software. It provides real-time protection for your home or small business PCs.

Minimum system requirements for running Microsoft Security Essentials

Microsoft Security Essentials is free* and easy to download and use. Here's what you need to run it:

• Operating System: Windows Vista (Service Pack 1 or Service Pack 2), Windows 7

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Windows 8.1 already has its own built-in antivirus Windows Defender, which is part of the Windows 8.1 Operating System.

Cheers.