By using a winrar.ini file, the program can store your preferences locally rather than in the Windows Registry.
What is WinRAR and is it safe to use? Complete guide - ExpressVPN Download WinRAR 611 Portable rar
WinRAR 6.11 added improved support for Gzip archives and fixed critical bugs from previous versions. Key Features of Version 6.11 By using a winrar
Includes a switch ( -mes ) to suppress password prompts for encrypted solid archives in command-line mode. How to Get It Safely By using a winrar.ini file
The portable version is ideal for users who work across different computers or need to keep their system registry clean.