System Requirements Supported Operating System. Install Instructions Important: Make sure that your computer has the latest Windows service pack and critical updates. To find security updates, visit Windows Update. The Windows Imaging Component 32 bit can be found here. The Windows Imaging Component 64 bit can be found here. On this page, locate the Download button and then click it to start the download.
To start the installation immediately, click Run. To save the download to your computer so that you can install it later, click Save. To cancel the installation, click Cancel. Web Developers and Administrators To install the. Additional Information Additional Requirements for Server Installation If you have to perform a server installation, your computer must have the following software in addition to the basic requirements: Internet Information Services IIS version 6.
New features :. NET Framework 4 on your computer, and similarly,. In-place update means that they use the same runtime version, but the assembly versions are updated and include new types and members. After you install one of these updates, your. NET Framework 4,. However, the reverse is not true. We do not recommend running apps that target a later version of.
NET Framework on an earlier version. For example, we do not recommend that you run an app the targets. In Visual Studio, you can choose. TargetFrameworkMoniker property to compile the project as a. This assembly or executable can then be used on any computer that has the. Only run this assembly or executable on computers that have. An executable that targets. NET Framework, such as. The user will be prompted to install. In addition,. The principle described applies to any app that targets a later version of.
NET Framework than the one installed on the system on which it's running. Some changes in. NET Framework may require changes to your app code; see Application Compatibility before you run your existing apps with. For more information about installing the current version, see Install the. NET Framework for developers. For information about support for the. NET Framework, see. NET Framework official support policy on the. NET website. NET Framework versions 2.
These versions represent successive layers of a single installation. Each version is built incrementally on top of the earlier versions. It's not possible to run versions 2. When you install version 3. NET Framework 4 ends this layering approach, and it and later releases. NET Framework versions. For example, CLR version 4. NET Framework versions 4 through 4.
CLR version greater than or equal to 4. NET Framework versions starting with. NET Framework 4. Community-maintained tools are available to help detect which. NET Framework versions are installed:. For information about detecting the installed updates for each version of. NET Framework updates are installed. You can use the RuntimeInformation. FrameworkDescription property to query for which. NET implementation and version your app is running on. If the app is running on. NET Framework, the output will be similar to:.
The version of. If the Full subkey is missing, then. NET Framework installed. To determine whether a minimum version of. For example, if your application runs under. From the Start menu, choose Run , enter regedit , and then select OK. If the Full subkey isn't present, then you don't have. If it exists, then you have. Its value corresponds to a particular version of. In the following figure, for example, the value of the Release entry is , which is the release key for.
The following examples check the value of the Release entry to determine whether. This code returns True if it's installed and False otherwise.
Use the RegistryKey. OpenBaseKey and RegistryKey. If the app you're running is bit and running in bit Windows, the registry paths will be different than previously listed.
For example, the registry subkey for. To be forward-compatible, check for a value greater than or equal to the value listed in the. NET Framework version table. The following example checks the value of the Release entry in the registry to find the versions of. Add the directive using Microsoft.
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