Administrators can download it once and deploy it across multiple workstations via a network share or USB drive without repeatedly downloading bits from Microsoft servers.
The Microsoft .NET Framework 4.5 offline installer provides a convenient and reliable way to install the framework without an active internet connection. The offline installer is useful for users who do not have access to the internet or who want to install the framework on multiple machines without having to download the installation files each time. With its improved performance, security, and functionality, the .NET Framework 4.5 is a major update to the framework that provides significant benefits for developers and users alike. microsoft net framework 4.5 offline installer
Up to 855 MB needed for 32-bit; 2 GB for 64-bit. Step-by-Step Installation Process Administrators can download it once and deploy it