Great Grand Masti is a commercially released Bollywood film. Uploading it without permission violates copyright law. Any copy found on the Archive is likely and could be removed at any time.
You can find the movie on legitimate streaming platforms, which offer better quality and security than unofficial archive links: Amazon Prime Video great grand masti internet archive free
Searching for "free" versions of movies on unverified sites carries several risks: Great Grand Masti is a commercially released Bollywood film