Modern development has moved to .NET 8 or .NET 9 , which are cross-platform and separate from the legacy Windows-only Framework.
Your version of Windows already includes .NET Framework 4.9 or a newer iteration (.NET 5/6/7/8/9 runtime). net framework 49 offline installer for windows
However, if you're referring to a specific application requirement that mentions "4.9," double-check the documentation – it might mean .NET 9 (modern) or a typo for 4.8. Modern development has moved to
Up to 4.5 GB of available space on the system drive (including temporary installation files) Step-by-Step Installation Guide net framework 49 offline installer for windows