Avira Antivirus supports a variety of operating systems to ensure broad compatibility for users. For Windows, it typically provides support for Windows 10, Windows 8.1, and Windows 7. It is important to note that certain features may be limited based on the specific version of Windows being used. For macOS, Avira generally supports recent macOS versions, allowing Mac users to benefit from its security features. Additionally, Avira Antivirus offers mobile applications for Android and iOS, catering to users on smartphones and tablets as well. Specific system requirements can vary with different versions of the software, so users are encouraged to review the information available on the Avira website for the most up-to-date compatibility details. Individuals looking for precise compatibility information and system requirements can find this on the current web page dedicated to product specifications and support guidelines.