Modern Windows versions do not allow you to install .NET 2.0 using the old standalone .exe files. Instead, .NET 2.0 is bundled into the package, which is already present on your system but usually disabled. Microsoft .NET Framework 2.0 Service Pack 1 (x64)
Microsoft .NET Framework 2.0 Service Pack 1 (x64) provides cumulative updates for customer reported issues, security improvements, Install .NET Framework 3.5 on Windows 10 - Microsoft Learn download net framework 2.0 offline installer
Keeping a copy of the installer ensures you can always run your legacy software, even if Microsoft eventually removes the download links. How to Install .NET 2.0 on Windows 10 & 11 Modern Windows versions do not allow you to install
Need the full offline installer for .NET Framework 2.0? Download the standalone setup here to install on Windows without an internet connection. How to Install