Many RAR packs (especially from forums or archives) are password-protected. Check the source where you found the links for the required key.
The software is looking for part02.rar . Ensure it is in the same folder and named correctly.
Standard zip tools built into Windows or macOS often struggle with multi-part RARs. It is best to use specialized software: The original tool for this format.
You cannot extract the "part01" file by itself. You must have of the sequence (e.g., part01.rar, part02.rar, part03.rar) in the same folder.
If even one part is missing, the extraction will fail with a "Missing Volume" error. 2. Recommended Software