How to repair or reinstall the Microsoft .NET Framework
NET Framework - Wikipedia
visual studio - VS 2019 Project Target Framework Not Installed - .Net Framework 4.0 - Stack Overflow
Microsoft .NET Framework - Download
Install the .NET Framework developer pack or redistributable - .NET Framework | Microsoft Learn
Net-Framework – Wikipedia
NET Framework 4 - Download für PC Kostenlos
Microsoft .NET Framework - Download
Net Framework 4.0 Download/Installation für Windows [32/64-Bit]
Microsoft .NET Framework 4 is already a part of this operating system. You do not need to install the .NET Framework 4 redistributable - Stack Overflow
WCF and WF Services in .NET Framework 4.0 and “Dublin” | Microsoft Learn