.NET Framework 4.5, released by Microsoft in 2012, is a major update to the .NET Framework 4 platform. It's a runtime environment that allows applications built with .NET technologies to run on Windows. Key features introduced in this version include:
. While it has been largely superseded by newer versions like 4.8, specific legacy environments still require this exact version for compatibility. Microsoft Support Download and Installation microsoft net framework 4.5 offline installer
512 MB minimum (1 GB or more recommended for optimal performance). .NET Framework 4.5