.net Framework 4.9 Offline Installer For Windows [portable] Link

As of April 2026, .NET Framework 4.9 does not exist as an official Microsoft product. Microsoft announced that .NET Framework 4.8 would be the last major version of the legacy Windows-only framework. While a minor update, .NET Framework 4.8.1, was released in August 2022 to add ARM64 support, the "4.x" line is now in maintenance mode.

Microsoft’s versioning for the .NET Framework (the Windows-only, closed-source, legacy runtime) stopped at 4.8.1. Higher numbers (e.g., 4.9) do not exist in any official capacity. Any website offering a “.NET Framework 4.9” download is likely fraudulent, mislabeled, or distributing malware. .NET Framework 4.9 Offline Installer for Windows

The final version in the 4.x series is .NET Framework 4.8.1. After that, Microsoft shifted its focus to the cross-platform, modern .NET (starting with .NET 5, then .NET 6, 7, 8, and now .NET 9). The last purely Windows-native .NET Framework versions are 4.8 and 4.8.1. As of April 2026,

Thus, the true answer to your request is: obtain the .NET Framework 4.8.1 offline installer. Microsoft’s versioning for the

There are several scenarios where using an offline installer for the .NET Framework 4.9 is beneficial: