Microsoft Security Essentials System Requirements:
Operating System: Windows XP (Service Pack 2 or Service Pack 3); Windows Vista; Windows 7 (Beta or Release Candidate) For Windows XP, a PC with: CPU with clock speed of 500 MHz or higher Memory of 256 MB RAM or higher For Windows Vista and Windows 7, a PC with: CPU with clock speed of 1.0 GHz or higher Memory of 1 GB RAM or higher VGA (display): 800×600 or higher Storage: 140 MB of available hard-disk space. MSE home page http://www.microsoft.com/security_essentials
Key features:
Real-time protection ,Dynamic Signature Service, Idle-time scanning ,Smart caching and active memory swapping Lightweight design ,CPU throttling
When Microsoft Security Essentials is running on your computer, it automatically alerts you if it detects viruses, spyware, or other potentially unwanted software. You can also set Microsoft Security Essentials to alert you if you run software that has not yet been analyzed, and you can choose to be alerted when software makes changes to your computer.
To set up Microsoft Security Essentials alerts :
Click Settings, and then click Real-time protection. Make sure the Use real-time protection (recommended) check box is selected. Select the check boxes next to the real-time protections options you want to run, and then click Save changes. If you're prompted for an administrator password or confirmation, type the password or confirm the action.
To automatically check for new definitions before scheduled scans (recommended)
Click Settings, and then click Scheduled scan. Make sure the Check for the latest virus & spyware definitions before running a scheduled scan check box is selected, and then click Save changes. If you're prompted for an administrator password or confirmation, type the password or confirm the action.
To check for new definitions manually
If you don't use scheduled scans, or if you don't get updates automatically, you should check for new definitions at least once a week. To help protect your computer, Microsoft Security Essentials will notify you if your definitions are out of date for more than seven days. Click the Update tab and then click Update now.
Select the Check for the latest virus & spyware definitions before running a scheduled scan check box and then click Save changes. If you're prompted for an administrator password or confirmation, type the password or confirm the action.
Troubleshooting:
Follow the steps in this online article to reset your computer's date or time setting:
http://support.microsoft.com/kb/929458http:/support.microsoft.com/kb/929458
Visit one of the Microsoft Security Portals. If you are using the English version of Windows, visit the Microsoft Security Portal
http://www.microsoft.com/security/portal/ADL.aspxhttp:/www.microsoft.com/security/portal/ADL.aspx
What's the difference between Microsoft Security Essentials and Windows Defender?
Microsoft Security Essentials is antimalware software, which means that it's designed to detect and help protect your computer against a wide range of malicious software, including viruses, spyware, and other potentially unwanted software. Windows Defender, which is automatically installed with your Windows operating system, is software that detects and stops spyware. To learn more about Windows Defender
Microsoft Security Essentials doesn't detect cookies
As Microsoft believes Cookies are small text files that Web sites put on your computer to store information about you and your preferences. Web sites use cookies to offer you a personalized experience and to gather information about Web site use. Microsoft Security Essentials doesn't detect cookies because it doesn't consider them a threat to your privacy or to the security of your computer. Most Internet browser programs allow you to block cookies.
More on MSE on next post ,stay tuned.
how to change your password: 
CSC
