# .NET Framework requirements


## NServiceBus version 8.x

Requires [.NET 6](https://dotnet.microsoft.com/en-us/download/dotnet/6.0) (or higher) **or** [.NET Framework Version 4.7.2](https://dotnet.microsoft.com/download/dotnet-framework/net472) (or higher)

## NServiceBus version 7.x

Requires [.NET Core 2.0](https://www.microsoft.com/net/core/) (or higher) **or** [.NET Framework Version 4.5.2](https://www.microsoft.com/en-au/download/details.aspx?id=42642) (or higher)

## NServiceBus version 6.x

Requires [.NET Framework Version 4.5.2](https://www.microsoft.com/en-au/download/details.aspx?id=17851) (or higher)

## NServiceBus version 5.x

Requires [.NET Framework Version 4.5](https://www.microsoft.com/en-au/download/details.aspx?id=30653) (or higher)

## NServiceBus versions 3.x and 4.x

Requires [.NET Framework Version 4.0](https://www.microsoft.com/en-au/download/details.aspx?id=17851) (or higher)

## Compatibility

NServiceBus targets a specific version of .NET but that does not mean user code must be targeting the same version. This only indicates the *minimum* required .NET version. The actual framework used at runtime is determined by the application.