Analyzers throw "SyntaxTree is not part of the compilation" exceptions

[alainbryden]

I cannot get the following 6 warnings to go away when running code analysis on this project using DurableTask.

Analyzer 'Microsoft.DurableTask.Analyzers.Orchestration.DateTimeOrchestrationAnalyzer' threw an exception of type 'System.ArgumentException' with message 'SyntaxTree is not part of the compilation (Parameter 'syntaxTree')'.
Exception occurred with following context:
Compilation: <Project Name>
SyntaxTree: C:\Users\abryden\git\<project path>\TaskDispatcher.cs
SyntaxNode: [Function(nameof(OrchestrateDispatch ... [MethodDeclarationSyntax]@[2335..3145) (66,4)-(80,5)

System.ArgumentException: SyntaxTree is not part of the compilation (Parameter 'syntaxTree')
   at Microsoft.CodeAnalysis.CSharp.CSharpCompilation.GetSemanticModel(SyntaxTree syntaxTree, SemanticModelOptions options)
   at Microsoft.DurableTask.Analyzers.Orchestration.MethodProbeOrchestrationVisitor.FindInvokedMethods(SemanticModel semanticModel, SyntaxNode callerSyntax, IMethodSymbol callerSymbol, String rootOrchestration, Action`1 reportDiagnostic)
   at Microsoft.DurableTask.Analyzers.Orchestration.OrchestrationAnalyzer`1.<>c__DisplayClass0_0.<Initialize>b__1(SyntaxNodeAnalysisContext ctx)
   at Microsoft.CodeAnalysis.Diagnostics.AnalyzerExecutor.ExecuteAndCatchIfThrows_NoLock[TArg](DiagnosticAnalyzer analyzer, Action`1 analyze, TArg argument, Nullable`1 info, CancellationToken cancellationToken)
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Suppress the following diagnostics to disable this analyzer: DURABLE0001

I get one of these for each of DURABLE0001, DURABLE0002, DURABLE0003, DURABLE0004, DURABLE0005, DURABLE0006 - each the same except for the Analyzer name at the start of the message.

IDE: Microsoft Visual Studio Professional 2022 (64-bit) - Current - Version 17.14.21 (November 2025)

I've tried things like restarting, reinstalling the latest VS2022, removing and re-adding the nuget package Microsoft.Azure.Functions.Worker.Extensions.DurableTask, explicitly installing the Microsoft.DurableTask.Analyzers package (there's only version 0.1.0, so I can't test upgrading/downgrading this).

I've searched and found similar issues to "SyntaxTree is not part of the compilation" seemingly resolved by visual studio updates (e.g. https://developercommunity.visualstudio.com/t/Feature-Semantic-classification-is-cur/10370922), as well as previously fixed Analyzer issues (e.g. Azure/azure-functions-durable-extension#1320), so perhaps this is a new issue in a similar vein?

Thanks for your help, and sorry if this turns out not to be an issue related to this project.