Secure the official dotNetFx45_Full_setup.exe payload. Privileges: Right-click the installer executable file. Execute: Select "Run as administrator" to launch setup.
The .NET Framework 4.5 provides a number of significant features, including: microsoft net framework 4.5 offline installer
To integrate into MDT/SCCM: extract the executable using /x:extractfolder to get the .msi and .cab files, then deploy via standard application model. Secure the official dotNetFx45_Full_setup
If you encounter any issues during installation, refer to the troubleshooting guide on the Microsoft website for assistance. microsoft net framework 4.5 offline installer
Comprehensive Guide to Microsoft .NET Framework 4.5 Offline Installer