Ars Technia reports that Microsoft has started sending out invites for the Microsoft Security Essentials Ongoing Beta Program. The purpose of sending out these invitations is to provide the Microsoft Security Essentials (MSE) Ongoing Beta Program members  the latest builds for testing purposes. Testers who receive this email will get their hands on build 1.0.1676.0, which is available for use with Windows XP , Windows Vista/7 32-bit , and Windows Vista/7 64-bit.

mse_1676

Here is excerpt from the invitation email

Interested in joining the fight against viruses, spyware, and other PC health dangers? Help improve Microsoft Security Essentials, Microsoft’s new antimalware solution for consumers, by becoming an Ongoing Beta program tester. As part of the Microsoft Security Essentials Ongoing Beta program, you will have the opportunity to explore new builds before the public sees them, submit bugs, and give feedback. Your feedback helps Microsoft to make its software and services the best that they can.

Testers need to keep one thing in their mind. If they have already installed Microsoft Security Essentials they will be required to uninstall the existing MSE program before installing the new private beta build for testing.