It's here! Check out the Windows updates patch tuesday promo. Windows 11 optional update adds new Fluent 2D emoji style, and more windows Apply now Set fire to your applications! Roscosmos chief says Baikonur is secure despite Kazakhstan protests twirl Login Close. Username or email:. See how to enable scripts. NET Framework 3. Details Version:. File Name:. Date Published:. File Size:. System Requirements Supported Operating System.
When an app runs, the CLR takes the assembly and uses a just-in-time compiler JIT to turn it into machine code that can execute on the specific architecture of the computer it is running on. Read more: What is the. NET Framework. The following releases have reached end of life, meaning they're no longer supported. We recommend moving to a supported release.
NET Framework is used to create and run software applications. NET apps can run on many operating systems, using different implementations of. NET Framework is used for running. NET apps on Windows. You need. NET Framework installed to run applications on Windows that were created using. It's already included in many versions of Windows.
You only need to download and install. NET Framework if prompted to do so. See Architecture of. NET Framework for more info. The CLR is the execution engine that handles running applications. NET and. NET Framework share many of the same components and you can share code across the two. Some key differences include:. NET vs. NET Framework for server apps for more details. Some versions of. NET Framework are installed side-by-side, while others will upgrade an existing version known as an in-place update.
In-place updates occur when two. For example, installing. NET Framework 4. NET Framework is free, like the rest of the. NET platform. There are no fees or licensing costs, including for commercial use. NET is free for more details. In most cases, you should use the latest stable release. Currently, that's.
Applications that were created with any 4. NET Framework will run on.
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