Download .NET Framework 4.0 | Free Official Downloads

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4. 4.0

Upgrade your apps With a few clicks in Visual Studio, upgrade your apps from .NET Framework to the latest .NET. Learn more × Download .NET Framework 4.0

This release has reached end of life, meaning it is no longer supported. We recommend moving to a supported release, such as .NET Framework 4.8. See our support policy for more details.

Runtime

Do you want to run apps? The runtime includes everything you need to run existing apps/programs built with .NET Framework.

Download .NET Framework 4.0 Runtime

Advanced downloads

Advanced downloads for .NET Framework 4.0

Download type	Build apps - Dev Pack Tooltip: Do you want to build apps? The developer pack is used by software developers to create applications that run on .NET Framework, typically using Visual Studio.	Run apps - Runtime Tooltip: Do you want to run apps? The runtime includes everything you need to run existing apps/programs built with .NET Framework.
Web installer Tooltip: Downloads all required files, including localized resources, while the installer runs. An Internet connection is required during installation.	N/A	Runtime
Offline installer Tooltip: Includes everything needed for an English installation. No Internet connection is required after you have downloaded the installer.	Reference assemblies	Runtime

Other versions

• .NET Framework 4.8.1
• .NET Framework 4.8
• .NET Framework 4.7.2
• .NET Framework 4.7.1
• .NET Framework 4.7
• .NET Framework 4.6.2
• .NET Framework 4.6.1
• .NET Framework 4.6
• .NET Framework 4.5.2
• .NET Framework 4.5.1
• .NET Framework 4.5
• .NET Framework 3.5 SP1

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