The dotnetfx35setup.exe file is a self-extracting executable that installs the .NET Framework 3.5 on a Windows system. This file is approximately 231 MB in size and is used to install the .NET Framework 3.5 on Windows XP, Windows Vista, and Windows 7 operating systems.
dism /online /enable-feature /featurename:NetFx3 /all /source:D:\sources\sxs /limitaccess dotnetfx 365.exe
When you run the dotnetfx35setup.exe file, it performs the following steps: The dotnetfx35setup