The filenames must be identical except for the numbers at the very end. 3. How to Extract the Data
This usually means you are missing one of the parts (like the .001 file) or the download was interrupted and the file is corrupted. 1 (7)-7 & 1 (8)-8.7z.002
The filename indicates that you are dealing with the second part of a split compressed archive created with 7-Zip . The filenames must be identical except for the