: 7-Zip uses a specific naming convention: .7z.001 , .7z.002 , .7z.003 , and so on. Your file, ending in .004 , is the fourth segment in that sequence.
Do you have the of this archive (specifically the .001 file) saved in the same location? Break Up Large ZIP Files into Smaller Files with 7-ZIP
: Large files are often "split to volumes" during compression to meet file size limits for email or cloud storage.
: To extract the content, you must specifically open or right-click the first file ( ICB.7z.001 ). Software like 7-Zip or WinZip will automatically detect and "stitch" the subsequent parts together.