.net Framework 4.9 Offline Installer For Windows
Using the links above, download NDP481-x86-x64-AllOS-ENU.exe. The file size is approximately 100 MB to 120 MB.
| If you need this... | Download this... | File Name Example |
| -------------------------------------------------------- | ---------------------------------------------------------- | ------------------------------------- |
| "Microsoft .NET Framework 4.9" (mislabeled) | .NET Framework 4.8.1 Offline Installer | NDP481-x86-x64-AllOS-ENU.exe |
| Windows 7 / 8.1 / Server 2012 support | .NET Framework 4.8 Offline Installer | ndp48-x86-x64-allos-enu.exe |
| Modern cross-platform apps (Blazor, ASP.NET Core 9) | .NET 9 Desktop Runtime (Not Framework) | windowsdesktop-runtime-9.0.x-win-x64.exe |
| Legacy Windows Forms / WPF app that needs older 3.5 | .NET Framework 3.5 SP1 Offline (via Windows Features) | N/A (Use DISM) |
no official .NET Framework 4.9 . Microsoft announced .NET Framework 4.8 as the final major release of the ".NET Framework" line . Future development shifted to the cross-platform
(formerly .NET Core), which is currently on version 9.0 and 10.0
If you are looking for an offline installer for the latest versions of either line, you can find them here: Current Stable Versions .NET Framework 4.8.1
: This is the most recent version of the traditional .NET Framework for Windows. You can download the 4.8.1 Offline Installer directly from Microsoft Microsoft Learn .NET Framework 4.9 Offline Installer for Windows
: This is the latest modern, cross-platform successor. You can find the Offline Runtime and SDK Installers on the official .NET download page Version Comparison .NET Framework (4.x) .NET (Core / 5-10) Current Version 9.0 (Current), 10.0 (Preview) Windows only Windows, macOS, Linux Maintenance (Legacy) Active Development Installer Type Offline/Web available Offline/Web/CLI available Additional resources for managing .NET installations: Official Downloads Installation Guides Compatibility Direct Download Links Microsoft .NET Framework Download Center
provides a central hub for all supported versions of the classic framework. For the modern, high-performance successor, visit the .NET Download page to get versions 8.0, 9.0, or 10.0. Manual & Offline Setup Microsoft Learn
offers step-by-step instructions for installing on various Windows versions. Learn how to enable .NET Framework 3.5
using Windows Features if you need compatibility for older apps. Version Support & Lifecycle Wikipedia Version History
There is currently no official .NET Framework 4.9 available from Microsoft. The ".NET Framework" line effectively ended with version 4.8.1, as Microsoft has transitioned its development efforts to the modern, cross-platform .NET 5, 6, 7, 8, and 9 series. Using the links above, download NDP481-x86-x64-AllOS-ENU
If you see a "4.9" version on third-party sites, it is likely a mislabeled file or potentially unsafe software. For a stable, official experience, you should use the latest supported versions: Latest Official Versions
.NET Framework 4.8.1: The final version of the classic Windows-only framework.
.NET 9: The most current version of the modern, high-performance platform (formerly called .NET Core). Review of .NET Framework 4.8.1 (Offline Installer)
Since 4.8.1 is the actual current "solid" version you likely need, here is a quick breakdown based on technical reviews and Microsoft's documentation:
Users often prefer the "Offline Installer" (a full standalone package) over the "Web Installer" (a small bootstrap file) for several reasons: For Windows 10, Windows 11, Windows Server 2019,
For Windows 10, Windows 11, Windows Server 2019, and Windows Server 2022, the correct offline installers are:
.NET Framework 4.8 (still supported, offline)
Note: Microsoft no longer provides separate “developer pack” offline installers for the full Framework; the runtime offline installer includes everything needed for end-user applications.
Even with the correct installer (4.8.1, not 4.9), you may encounter errors.