If you are developing new applications, it is highly recommended to use Microsoft .NET 8.0 or Microsoft .NET Framework 4.8.1 , which are modern and actively supported. How to Check Your Current Version
Continued use of 4.5 may expose your environment to vulnerabilities that are no longer patched.
. NET Framework 4.5. 2, 4.6, and 4.6. 1 retired on April 26, 2022. Microsoft Learn Determine which .NET Framework versions are installed microsoft .net framework 4.5 developer pack download
Once finished, open your project properties in Visual Studio to select ".NET Framework 4.5" as your target. Important Lifecycle and Security Notice
Ensure your OS is compatible. Note that version 4.5 was a "highly compatible, in-place update" to version 4.0. If you are developing new applications, it is
Locate the official Microsoft .NET Framework 4.5 Developer Pack executable.
If Visual Studio doesn't show 4.5 in the target dropdown, ensure the Multi-Targeting Pack was included in your download. NET Framework 4
This guide provides everything you need to know about the , its components, and why it remains a critical asset for maintaining legacy software environments. What is the .NET Framework 4.5 Developer Pack?
The is a comprehensive software bundle used by programmers to build and test applications for the Windows platform. Unlike the standard "Runtime" (which only allows you to run apps), the Developer Pack includes the Multi-Targeting Pack, which allows developers to use Visual Studio to create software specifically for the 4.5 version of the framework. Key Components
For newer Windows versions, you may need to enable the framework via Turn Windows features on or off in the Control Panel. Microsoft .NET Framework - Microsoft Lifecycle