Windows Explorer, the native file manager in Windows, can extract data from ZIP files but it does not open RARs. You need a third-party application to extract the contents of a RAR file.

However, if WinRAR is not associated with RAR files, this will not work; instead, right-click the file, point to "Open With" and click "WinRAR Archiver." Click the "Extract To" button.

Hence, if you want to open or extract an RAR file, you will be required to use a third-party RAR extractor application. You can use WinRAR or some other software like 7-Zip, Extract Now, and ...