There are several free antivirus options available for Windows, a popular operating system developed by Microsoft. Some of the most popular options include:
Microsoft Defender: Microsoft Defender is a free antivirus software that is included with Windows. It is automatically enabled on new installations of Windows and provides real-time protection against malware.
Avast Free Antivirus: Avast Free Antivirus is a free antivirus software that provides real-time protection against malware, as well as additional features such as a firewall and a password manager. It can be downloaded and installed from the Avast website.
AVG Antivirus Free: AVG Antivirus Free is a free antivirus software that provides real-time protection against malware, as well as additional features such as a firewall and a file shredder. It can be downloaded and installed from the AVG website.
Avira Free Antivirus: Avira Free Antivirus is a free antivirus software that provides real-time protection against malware, as well as additional features such as a VPN and a system optimizer. It can be downloaded and installed from the Avira website.
It's important to note that while antivirus software can help protect your system from some types of malware, it is not a substitute for good security practices, such as keeping your operating system and software up to date, using strong passwords, and being cautious when downloading and installing software from the internet.