Never use Windows XP to access any account containing personal data, financial info, or private conversations—unless the machine is air-gapped (never connected to the internet). Since WhatsApp requires internet, this is a direct contradiction.
Many senior citizens refuse to give up their familiar XP machine. They use it for email and solitaire. They don’t want a smartphone but need to text family. whatsapp windows xp
Some users prefer third-party clients that "wrap" the WhatsApp Web interface into a standalone window, though these can be hit-or-miss on XP: Never use Windows XP to access any account