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Right-click the downloaded executable file ( .exe ) and select . Accept the Microsoft Software License Terms. Click Install and let the wizard extract the components.
He found the link on a dusty Microsoft support page. With a click, the 72MB installer began its journey. He watched the progress bar with the intensity of a man watching a heart transplant.
Windows 8 and Windows Server 2012 already include .NET Framework 4.5 as part of the operating system. Similarly, newer Windows versions may have higher versions pre-installed.
Download options
Navigate to the following subkey pathway: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full Look for a REG_DWORD value named Release .
Overview
| Error Code | Likely Cause | Solution | | :--- | :--- | :--- | | | Corrupt MSI cache or blocked by antivirus | Temporarily disable antivirus. Run sfc /scannow in CMD (Admin). | | 0x80240017 | The system is missing required updates | Install Windows Update KB2737084 and KB2781514 (for Windows 7). | | Blocked by "Windows 8.1/10" | You are trying to install .NET 4.5 on a newer OS | .NET 4.5 is an in-place upgrade to 4.0. On Win 8.1/10, you actually have 4.5.1 or 4.8. You cannot install 4.5 over 4.8. Mark your project to target 4.5 via Visual Studio instead. | | Installation rolls back instantly | Incompatible Visual Studio extension | Uninstall ReSharper or Red Gate tools temporarily, then reinstall. | | Error: "Same or higher version already installed" | .NET 4.5+ is already present | This is not an error for the end-user. For developers, you still need the targeting pack. Download the .NET 4.5 Targeting Pack (a smaller file) instead. |
While it is still available for legacy projects, please note that in January 2016, and 4.5.2 reached end-of-life on April 26, 2022. Microsoft strongly recommends migrating to a supported version like .NET Framework 4.8.1 to continue receiving security updates. Official Download Links
This comprehensive guide covers everything you need to know about this developer pack, including its components, installation steps, and direct download strategies. What is the .NET Framework 4.5 Developer Pack?
