While Windows 11 and macOS have some built-in support for basic archives, they often struggle with split volumes or password-protected files. The official 7-Zip is the gold standard.
Here is everything you need to know about what these files are and how to actually use them. What Exactly is a .7z.001 File? A file ending in .7z.001 is a .
The Unarchiver or WinZip are reliable alternatives. For Mobile: Use apps like iZip or ZArchiver . 2. The Extraction Process How to Extract .7z.001 files - Microsoft Q&A