Because .NET 3.5 is built directly into modern Windows operating systems, you usually do not need to download an external installer file. You simply need to enable it.
+-------------------------------------------------------+ | .NET Framework 3.5 | | (LINQ, ASP.NET AJAX, New Compiler, Client Profile) | +-------------------------------------------------------+ | .NET Framework 3.0 | | (WPF, WCF, WF, Windows CardSpace) | +-------------------------------------------------------+ | .NET Framework 2.0 | | (Base Class Library, Windows Forms, ASP.NET) | +-------------------------------------------------------+ | CLR 2.0 (Execution Engine) | +-------------------------------------------------------+ 1. The Foundation: .NET Framework 2.0 (CLR 2.0)
Because 3.5 is a legacy feature, Windows often requires you to "enable" it rather than simply "install" it. Method 1: Enable via Control Panel (Easiest) Open the .
: This smaller package downloads only the components needed for your specific system during installation net framework 35 includes net 20 and 30 download link
A: Yes. .NET Framework 3.5 can still be installed and used on supported Windows versions, including current Windows 10 and 11 builds. The runtime remains supported until January 9, 2029. However, starting with Windows 11 26H1, .NET Framework 3.5 is only available as a standalone installer and can no longer be added as a Windows component.
Legacy business software and older video games frequently require the 2.0 or 3.0 runtime environments. Newer versions like .NET Framework 4.x or .NET 6+ cannot run these applications natively due to architectural changes.
On modern operating systems, .NET 3.5 is already "on" your computer but disabled by default. You don't actually need an external download link; you just need to enable it. Because
When you install .NET Framework 3.5 , you are automatically installing the core runtimes for 2.0 and the extensions for 3.0 . They are nested inside the 3.5 installer.
If your system prompts you for a standalone file, or if you are managing an older system, you can use the official Microsoft download repository.
The safest and most reliable way to "install" .NET 3.5 on modern Windows is to enable it through the OS settings: Install .NET Framework 3.5 on Windows 10 - Microsoft Learn The Foundation:
Choose if prompted. Restart your computer to finish the setup. Method 2: Official Web Installer Link
If you are on an older system or need the setup file, the safest source is the Microsoft Download Center: 2. Enabling it via Windows Features (Recommended)
It is a Windows Feature, so yes. You can uncheck it in the Turn Windows features on or off dialog. However, it is not recommended to do so, as any program that requires it will fail to run or throw errors.
: The modern landing page for all 3.5 SP1 downloads.