365.exe - Dotnetfx

If you must download the installer, always use official Microsoft sources like the Microsoft Download Center to avoid malware. Safety Warning If you have a file specifically named "dotnetfx 365.exe"

Only download framework installers from official Microsoft sources to avoid malware bundled as legitimate system tools. dotnetfx 365.exe

What is .NET Framework? A software development framework | .NET If you must download the installer, always use

Version 3.5 SP1 is a cumulative update, meaning it includes all previous versions (2.0 and 3.0) within a single installer. If you must download the installer