It looks like you might be referring to a .7z file (a high-compression archive) and may have had a typo in your query. To open or manage these files, the best tool is the official software. Quick Guide to Opening .7z Files
Choose or "Extract to [Folder Name]" to unpack the contents. Alternative Tools gatyorfmya.7z
: Run the downloaded installer. It is lightweight, free, and open-source. Extract Your File : Right-click your .7z file. Select 7-Zip from the menu. It looks like you might be referring to a