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Version requirements for .NET 9 SDK

  • Article

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:

  • 9.0.100 requires version 17.11 to target net8.0 and earlier frameworks.
  • 9.0.100 requires version 17.12 or later to target net9.0.

Version introduced

.NET 9 GA

Previous behavior

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.

New behavior

  • .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.

Type of breaking change

This change can affect source compatibility.

Reason for change

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.

Affected APIs

N/A

See also