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I am trying to upgrade to .NET 10 (from .NET 9), but after updating the Microsoft.AspNetCore.OpenApi package to 10.0.0, I can no longer build my application.

This is the error I get:

The 'interceptors' feature is not enabled in this namespace. Add '$(InterceptorsNamespaces);Microsoft.AspNetCore.OpenApi.Generated' to your project.

The error occurs on line 596 of the file OpenApiXmlCommentSupport.generated.cs.

Is there any way to disable XML comment generation? It's not a feature I am currently using.

If not, is there another way to prevent this build error?

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To prevent the build error, you can add the following to a property group in your .csproj:

<InterceptorsNamespaces>$(InterceptorsNamespaces);Microsoft.AspNetCore.OpenApi.Generated</InterceptorsNamespaces>

Source: I got the same error message as you and followed the instructions, which resolved the problem

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2 Comments

While this did work, it's not ideal for me, as the Microsoft.Aspnet.OpenApi package is referenced by a package I share with all of my Microservices. This change requires me to update every app that references by shared library. I was hoping for a while to disable it in the Shared package.
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