The installation is consistently described as a "straightforward" and "regular" process. After downloading the installer from the official WinRAR site , you simply double-click the .exe and follow the prompts.
WinRAR is technically "trialware." It is free for an evaluation period (usually 40 days), after which it will frequently prompt you to purchase a license, though its basic functions typically remain accessible. Platform Alternatives & Specialized Setup Tools File Setup rar
WinRAR remains the primary tool for handling RAR files due to its proprietary compression algorithm, which often results in smaller file sizes than standard ZIP archives. File Setup rar