It sounds like you might be looking at a specific , a process log error , or perhaps a malware-related tag commonly found in search results.
Never download .exe or .msi files when you are looking for an .mp4 . A real video file will never ask for administrative permissions to run. Error when creating a batch job in Oracle: already exists?
Scammers often create pages with random strings of numbers followed by "Download MP4" to lure people looking for specific YouTube videos.