The file is the fourth part of a split multi-volume 7-Zip archive. Key Characteristics
: Use a tool like 7-Zip or WinRAR to select "Extract Here" or "Extract to [Folder Name]". The software will automatically detect and combine all numbered parts to reconstruct the original file. Troubleshooting mm_002.7z.004
: To open or extract the contents, you must have all previous parts (e.g., .001 , .002 , .003 ) and any subsequent parts in the same folder. Format : It uses the 7-Zip (.7z) compression format. How to Extract The file is the fourth part of a
: Ensure mm_002.7z.001 , mm_002.7z.002 , mm_002.7z.003 , and mm_002.7z.004 are in the same directory. Troubleshooting : To open or extract the contents,
: If you receive a CRC error, one of the volumes (possibly part 004) may have been downloaded incorrectly and needs to be re-acquired.
12 May 2020 — 7zip file with numbers on it like 001 means that you only have a part file of the whole compressed file. Microsoft Learn How to Open and Extract .001 Files - Microsoft Q&A
: If part .001 or any intermediate part is missing, the archive will be corrupted and cannot be extracted.