Because Windows and macOS do not natively support the RAR format, you must use a third-party utility. :
A file named is a compressed archive that requires specific software to open. While the exact contents of a file with this specific name are not public knowledge, the extension .rar (Roshal Archive) indicates it is a bundle of one or more files compressed to save space. How to Open "howthat.rar" howthat.rar
: Only open the file if you trust the person or website that provided it. Because Windows and macOS do not natively support
Select (to put files in the current folder) or Extract to "howthat/" (to create a new folder for the contents). Run/View Contents : howthat.rar
How to open rar files on Windows 11? - Microsoft Community Hub