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Per the published support rules, the minimum Visual Studio and MSBuild version for each new major release is updated with a one quarter delay. For the .NET 9 release:
net8.0
and earlier frameworks.net9.0
..NET 9 GA
Previously, you could load .NET 9.0.100 on earlier Visual Studio versions. In addition, there was no warning when targeting net9.0
in Visual Studio version 17.11.
.NET 9.0.100 won't load in Visual Studio version 17.10 or earlier.
Visual Studio version 17.11 doesn't make net9.0
available in the project properties.
.NET 9.0.100 warns when targeting net9.0
and using Visual Studio version 17.11:
NETSDK1223: Targeting .NET 9.0 or higher in Visual Studio 2022 17.11 is not supported.
This change can affect source compatibility.
This is part of the standard support policy for the SDK as not all prior versions of Visual Studio and MSBuild can be supported.
Upgrade your Visual Studio version to the required version.
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Events
Mar 17, 9 PM - Mar 21, 10 AM
Join the meetup series to build scalable AI solutions based on real-world use cases with fellow developers and experts.
Register nowTraining
Module
Create a new .NET project and work with package dependencies - Training
Create a .NET project and learn to add packages and manage package dependencies in your project. Use the .NET Core CLI and NuGet registry to add libraries and tools to your C# applications through Visual Studio Code.