While the most recent versions of WinSCP (6.x and above) are designed for Windows 7 and newer, you can still run stable versions on Windows XP.
For unpatched versions of Windows XP (pre-SP2), even older releases like WinSCP 5.1.x or earlier may be required. How to Download WinSCP for Windows XP winscp download windows xp 32 bit
WinSCP 6.1.2 is the latest build reported to run on Windows XP SP2/SP3 when using the Portable Executables package. Note that versions 6.3 and newer generally do not work on XP. While the most recent versions of WinSCP (6