: Right-click only the file ending in .001 .
The file is the first part of a multi-volume 7-Zip archive. Large files are often split into smaller parts (e.g., .001, .002, .003) for easier sharing or storage. How to Open and Extract M20CH03.7z.001
You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip. How to Open and Extract .001 Files - Microsoft Q&A : Right-click only the file ending in
: Download and install a compatible archiver like the official 7-Zip or WinRAR . M20CH03.7z.001
To access the content, you must have of the archive and follow these steps: