Running custom inventory or accounting software that "just works" and is too expensive to migrate.
VFP6 native help uses winhelp32.exe , removed in Windows 11. If you try to hit F1, VFP freezes. Download the WinHlp32.exe installer from Microsoft (for Windows 10/11 – yes, it exists as a separate download). Visual FoxPro 6.0 Portable.rar