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What's new this time? There are no major changes, this release is more about gentle evolution of the product. But for the most part, once you've spent a minute or two browsing the Settings dialog you'll probably be able to leave MSE alone, perhaps even forget it's there: this isn't the type of program to get in your way. So you can, say, limit the program's CPU usage during a scan to reduce its impact on your PC. Microsoft Security Essentials does have a few useful configuration options, too. But you can also run scans on demand, or automatically (via a scheduler), to detect any malware which may have penetrated your defences. Strong real-time protection looks out for and removes threats before they can cause any harm. The core functionality works much like any other antivirus package.
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Microsoft Security Essentials 4 is the latest release of Microsoft's lightweight, straightforward antivirus tool.
![Security essentials 32 bit](https://cdn3.cdnme.se/5447227/9-3/1_64e61dfaddf2b33c615a3cd3.png)