The "Fixed Portable" version of Windows Loader 2.2.1 suggests that this is a modified version of the original tool, which has been fixed to work on more systems and is portable, meaning it doesn't require installation and can be run directly from a USB drive or other portable storage device.
The tool is distributed as a RAR archive, which is a compressed file format that requires a file archiver like WinRAR to extract the contents.
Windows Loader is a software tool that bypasses the Windows activation mechanism, allowing users to activate their Windows installation without a valid product key. The tool works by injecting a custom loader into the Windows operating system, which tricks the system into thinking it's activated.
Windows Loader 2.2.1 is a popular activator tool developed by Daz, a well-known figure in the Windows activation community. The tool is designed to activate Windows 7, Windows 8, Windows 8.1, and Windows 10 operating systems.