H8027.7z.004

This indicates it is the 4th volume in a sequence. You cannot open this file independently; it is a "chunk" of data rather than a complete standalone file.

Right-click on the in the sequence ( h8027.7z.001 ). Select "Extract Here" or "Extract to h8027/" . h8027.7z.004

The file is the fourth part of a split compressed archive created with the 7-Zip utility . This indicates it is the 4th volume in a sequence

The software will automatically pull data from .004 and the other segments to reconstruct the original full-sized file. h8027.7z.004

Ensure you have 7-Zip or a compatible utility like WinRAR installed.