Find the for your specific operating system.

: You can download the latest official version of Avira Antivirus directly from their website. The official download is typically an .exe installer rather than a .rar file.

: A popular free, open-source alternative that supports RAR extraction. It is lightweight and highly recommended for Windows users.

If you have already downloaded a file in .rar format, you will need specific software to extract its contents:

Troubleshoot if your RAR file is corrupted. How To Open, Create, and Convert RAR Files - AVG AntiVirus

: This is the official tool for the RAR format. You can download it from WinRAR's official site to open, extract, and manage compressed archives.

: If you are specifically looking for version 15 (a legacy version), check the Avira Support pages for archived downloads or compatibility updates. How to Open a .RAR File