What is Microsoft Security Essentials?

Applies to: Windows 7

 

Microsoft Security Essentials reached end of service on January 14, 2020 and is no longer available as a download.  Microsoft will continue to release signature updates (including engine) to service systems currently running Microsoft Security Essentials untill 2023. 
 
Why is Microsoft Security Essentials no longer available?
Windows 7 is no longer supported and availability of new installations of Microsoft Security Essentials has ended. We recommend all customers move to Windows 10 and Windows Defender Antivirus for our best security option.
 

Will Microsoft Security Essentials running on my system continue to run?
Yes, we will continue to provide signature updates for Microsoft Security Essentials until 2023.