Real-time protection is how Microsoft Security Essentials alerts you when potential threats such as viruses and spyware are trying to install themselves or run on your PC. The moment this happens, you’ll see a message in the notification area to the far right of the taskbar
Click Clean computer to remove the detected item. Microsoft Security Essentials will automatically remove the item from your PC.
Click the Show details link to display the Potential threat details window, and then choose which action to apply to the detected item. For more information, see
What should I do if Microsoft Security Essentials detects malicious software on my computer?
Real-time protection is at the heart of Security Essentials, so it should always stay turned on. If real-time protection doesn’t turn on, stay on, or start automatically, follow these steps:
Troubleshooting real-time protection
You must first completely remove any existing Internet security programs, antivirus programs, and firewall software, including Microsoft Security Essentials, from your PC. To do so, follow the instructions in the topic
How do I uninstall antivirus or antispyware programs?
Download it free* right now
If you’re still having problems, contact support. For more information, see
Customer support (http://go.microsoft.com/fwlink/?LinkID=196174).