Microsoft has just released an upgrade to their antivirus program, Security Essentials. This is one of several updates that have been released today (the second Tuesday of each month is known as Patch Tuesday, and is the regular day for Microsoft to put out updates such as this). I am posting this to let you know that this release is indeed legitimately from Microsoft and should be installed.
If you click the Start button and go to Windows Update manually, this is one of the updates you would see:
You can check the box and download the upgrade, or you could just wait for it to be downloaded and installed overnight or the next time you restart your computer. If you choose to proceed manually with the Windows Update, you will see the following screens as part of the installation process:
This upgrade, if done by itself, may not require a restart of the computer. If you download and install all of the new Patch Tuesday updates, it probably will require a restart. On my Windows 7 computer there were 17 new updates.
If you have any problems and need assistance with this, I can help through my Remote Support service.