: You can use a Windows installation USB/ISO and run a command in Command Prompt (Admin) to install it manually:
If your software demands a "5.x runtime," it means , not Framework. You need the .NET 6.0 Desktop Runtime or .NET 8.0 .
Microsoft’s version history does not include a "5.2" release. The timeline moved from .NET Framework 4.8 to .NET 5 (skipping 4.9 to align with .NET Core versions). The current Long Term Support (LTS) versions are .NET 6 and .NET 8.
approximately 200 MB