The Microsoft .NET Framework 4.8 is the final major release of the classic .NET Framework, serving as a critical software layer for running and developing Windows applications. On Windows 10 64-bit, it provides the foundational infrastructure for thousands of desktop, web, and server-side programs. Core Role and Compatibility
"True" means 4.8 is installed.
Before downloading, verify if the framework is already active on your system: net framework 4.8 windows 10 64 bit