Microsoft Security Essentials 4.5 Prerelease Now Available for Download

Microsoft has released version 4.5 Prerelease of Microsoft Security Essentials (MSE). This download allows users to run the latest & greatest versions of Security Essentials before they are publicy available.

As a Microsoft Security Essentials Prerelease user, you will have the opportunity to explore and test new builds of Microsoft Security Essentials before they are publically available and provide feedback to Microsoft. Your feedback helps Microsoft to make its software and services the best that they can be. As a Microsoft Security Essentials Prerelease user, Microsoft Security Essentials updates will automatically be installed on your computer through Microsoft Updates.

To learn more about these programs, see the Microsoft Security Essentials privacy statement at Microsoft Security Essentials Pre-release Privacy Statement.

Leaving the program: If you wish to leave the prerelease program at any point in time, you can do so by uninstalling the program from your computer.

Download Microsoft Security Essentials 4.5 Prerelease
The set of Microsoft Security Essentials 4.5 (4.5.212.0) Prerelease is available at the following website. Once you click on the “Download” button, you will be prompted to select the files you need. Download the files appropriate for you:


Note: Please do NOT use the MSE Prerelease on production machines. A MSE Prerelease release should be considered for evaluation and testing purposes.

System requirements:
Supported operating systems:
  • Windows 7, Windows Vista

Minimum system requirements for Microsoft Security Essentials
  • Operating System: Windows Vista (SP1, or SP2)*, Windows 7*
  • For Windows Vista and Windows 7, a PC with a CPU clock speed of 1.0 GHz or higher, and 1 GB RAM or higher.
  • VGA display of 800 × 600 or higher.
  • 200 MB of available hard disk space.
  • An Internet connection is required for installation and to download the latest virus and spyware definitions for Microsoft Security Essentials.
  • Internet Browser:

*Your PC must run genuine Windows to install Microsoft Security Essentials.

Note: If you are running Windows XP, you need download this version.

Reference:
Microsoft Security Essentials Prerelease

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