Microsoft Safety Scanner

Microsoft Safety Scanner is a portable security tool that you can run on demand without installation. It offers three scanning modes—quick, full, or custom—to check your computer for viruses, spyware, and other malicious software. Since it's updated regularly with the latest definitions, it's a great secondary scanner to use alongside your main antivirus for a deeper clean or to troubleshoot a suspected infection. Simply download, run the scan, and delete any threats it finds.