the unity setup dont have a name

i downloaded unity3d from the official website and its size was 161mb but after i download it i couldnt open it the file name that i download was (mozilla firefox) there was no (.exe) or (.msi) or (.anything) simply the file that i downloaded wasnt a setup . what should i do

Try this link:

i think you downloaded a mac version or your downloader program had a problem or any other thing outside of unity servers.

Hi sometimes with mozilla it will download an exe and then tag on a .html on the end instead of .exe. Don't ask me why but I have seen it, Not with unity setup files but with other program setup files. Simply change the extension to .exe and it should work fine (if this is indeed the case)