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. NET is an integral part of many applications running on Windows and provides common functionality for those applications to run. For developers, the. NET Framework provides a comprehensive and consistent programming model for building applications that have visually stunning user experiences and seamless and secure communication. This article provides links for installing the. NET Framework 4.5, its point releases (, the. NET Framework 4.6, and the. NET Framework on your computer. If you're a developer, you can also use these links to download and redistribute the. NET Framework with your apps. Note that installing a new version of the. NET Framework doesn't always replace a previous version. For more information about versions of the. NET Framework and how to determine which versions are installed on a computer, see. NET Framework Versions and Dependencies and How to: Determine Which. NET Framework Versions Are Installed. All of the. NET Framework versions listed in the following table are in-place updates to the. NET Framework 4. In other words, if you install a later version, such as the. NET Framework 4.6, you do not first have to install the previous versions, such as the. NET Framework 4.5, or. Similarly, if you install a later version, such as the. NET Framework 4.6, you do not first have to uninstall the previous versions, such as the. NET Framework 4.5, or. Use the following table for quick links, or read further for details. To view the system requirements for the. NET Framework before installation, see. NET Framework System Requirements. For a general introduction to the. NET Framework for both users and developers, see Getting Started. For information about deploying the. NET Framework with your app, see the deployment guide. To read about the architecture and key features of the. NET Framework, see the.
The. NET Framework is an application development platform that provides services for building, deploying, and running desktop, web, and phone applications and web services. It consists of the common language runtime ( CLR which provides memory management and other system services, and an extensive class library, which includes tested, reusable code for all major areas of application development. To download the. NET Framework 4, use the links in the installation guide, and see what's new. For syntax, code examples, and usage information for. NET Framework types and members, see the class library. For an introduction to the architecture and key features of the. NET Framework, read the overview, and then learn about core development tasks. For a list of. NET Framework technologies, including WPF, WCF, and ASP. NET, see the quick technology finder. For code examples that illustrate various aspects of the. NET Framework, see samples. The. NET Framework for Users If you do not develop. NET Framework applications, but you use them, you do not need specific knowledge about the. NET Framework or its operation. For the most part, the. NET Framework is completely transparent to users. If you are using the Windows operating system, the. NET Framework may already be installed on your computer. In addition, if you install an application that requires the. NET Framework, the application's setup program might install a specific version of the. NET Framework on your computer. In some cases, you may see a dialog box that asks you to install the. NET Framework. If you have just tried to run an application when this dialog box appears and if your computer has Internet access, you can go to a webpage that lets you install the missing version of the. NET Framework. In general, you should not uninstall any versions of the. NET Framework that are installed on your computer, because an.