While Bilibili offers fan-uploaded versions, viewers looking for high-definition quality and official support can find the movie on several major platforms:
考古印度神片！20年后重看《Kal Ho Naa Ho》，我哭得比小时候还惨 🥲 (Archeology of an Indian classic: Rewatching KHNH after 20 years...) kal ho naa ho bilibili