Microsoft has another security tool you can use to double-check your computer for viruses and malware. The free Microsoft Security Scanner is not a replacement for good antivirus software – it’s meant to be used to double-check your computer for undetected infections.
The Microsoft Security Scanner is good for ten days – and then it expires. Why? To make sure you always have the very latest version, Microsoft, in its infinite wisdom, makes you re-download it after ten days. Still, it’s always good to double-check your computer a few times a month, regardless of what antivirus program you use. Microsoft Security Scanner plays nice with your regular antivirus program. So even though we’ve always told you not to install more than one antivirus program – you can use the Microsoft Security Scanner to be doubly sure your computer is free from viruses and malware.
If you’d like to try it out – you can get it free from http://www.microsoft.com/security/scanner/en-us/default.aspx
“Do you think your PC has a virus?
The Microsoft Safety Scanner is a free downloadable security tool that provides on-demand scanning and helps remove viruses, spyware, and other malicious software. It works with your existing antivirus software.
Note: The Microsoft Safety Scanner expires 10 days after being downloaded. To rerun a scan with the latest anti-malware definitions, download and run the Microsoft Safety Scanner again.
The Microsoft Safety Scanner is not a replacement for using an antivirus software program that provides ongoing protection.
For real-time protection that helps to guard your home or small business PCs against viruses, spyware, and other malicious software, download Microsoft Security Essentials.”