Right-click the file and select > 7-Zip .
Download and install the free software from the Official 7-Zip Website . KsKaJ.7z
Windows 11 supports extracting .7z files natively, though older versions or password-protected files require a third-party tool . : Right-click the KsKaJ.7z file. Select Extract All… . Choose a destination and click Extract . Using 7-Zip (Recommended) : Right-click the file and select > 7-Zip