throw error when Add migration In .net 8 upgraded project

Question

I upgraded my project to .Net 8 Now to add migrations with the add-migration command, I encounter the following error :

Unable to load one or more of the requested types. Method 'AddReplacements' in type 'Microsoft.CodeAnalysis.VisualBasic.CaseCorrection.VisualBasicCaseCorrectionService' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'AddLexicalClassifications' in type 'Microsoft.CodeAnalysis.VisualBasic.Classification.VisualBasicSyntaxClassificationService' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'AddLexicalClassifications' in type 'Microsoft.CodeAnalysis.VisualBasic.Classification.VisualBasicEditorClassificationService' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Could not load type 'Microsoft.CodeAnalysis.CodeGeneration.AbstractCodeGenerationService' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Method 'CreateExplicitlyCastedLiteralValue' in type 'Microsoft.CodeAnalysis.VisualBasic.CodeGeneration.VisualBasicFlagsEnumGenerator' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'get_ElasticMarker' in type 'Microsoft.CodeAnalysis.VisualBasic.CodeGeneration.VisualBasicSyntaxGenerator' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Derived method 'EndOfLine' in type 'Microsoft.CodeAnalysis.VisualBasic.CodeGeneration.VisualBasicSyntaxGeneratorInternal' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' cannot reduce access. Could not load type 'Microsoft.CodeAnalysis.Options.Providers.IOptionProvider' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.EmbeddedLanguages.LanguageServices.AbstractEmbeddedLanguagesProvider' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Method 'get_SyntaxFacts' in type 'Microsoft.CodeAnalysis.VisualBasic.EmbeddedLanguages.VirtualChars.VisualBasicVirtualCharService' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.AbstractDeclaredSymbolInfoFactoryService9' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Method 'LineContinuationFollowedByWhitespaceComment' in type 'Microsoft.CodeAnalysis.VisualBasic.Formatting.VisualBasicTriviaFormatter' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'get_HeaderFacts' in type 'Microsoft.CodeAnalysis.VisualBasic.Formatting.VisualBasicFormatEngine' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'get_HeaderFacts' in type 'Microsoft.CodeAnalysis.VisualBasic.Formatting.VisualBasicStructuredTriviaFormatEngine' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Could not load type 'Microsoft.CodeAnalysis.Formatting.AbstractSyntaxFormattingService' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Method 'get_SyntaxFacts' in type 'Microsoft.CodeAnalysis.VisualBasic.Indentation.VisualBasicIndentationService' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method not found: 'System.Threading.Tasks.Task1<System.Collections.Generic.IList1<Microsoft.CodeAnalysis.Text.TextChange>> Microsoft.CodeAnalysis.Indentation.ISmartTokenFormatter.FormatTokenAsync(Microsoft.CodeAnalysis.Workspace, Microsoft.CodeAnalysis.SyntaxToken, System.Threading.CancellationToken)'. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.ISemanticFacts' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Method not found: 'System.Threading.Tasks.Task1<Microsoft.CodeAnalysis.Document> Microsoft.CodeAnalysis.OrganizeImports.IOrganizeImportsService.OrganizeImportsAsync(Microsoft.CodeAnalysis.Document, System.Threading.CancellationToken)'. Could not load type 'Microsoft.CodeAnalysis.Recommendations.AbstractRecommendationService1' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.Recommendations.AbstractRecommendationServiceRunner1' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Method 'IsIdentifierValid' in type 'Microsoft.CodeAnalysis.VisualBasic.Rename.VisualBasicRenameRewriterLanguageService' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Could not load type 'Microsoft.CodeAnalysis.SemanticModelReuse.AbstractSemanticModelReuseLanguageService4' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Method 'IsApplicable' in type 'Microsoft.CodeAnalysis.VisualBasic.Simplification.VisualBasicCallReducer' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'IsApplicable' in type 'Microsoft.CodeAnalysis.VisualBasic.Simplification.VisualBasicCastReducer' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'IsApplicable' in type 'Microsoft.CodeAnalysis.VisualBasic.Simplification.VisualBasicEscapingReducer' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'IsApplicable' in type 'Microsoft.CodeAnalysis.VisualBasic.Simplification.VisualBasicExtensionMethodReducer' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'IsApplicable' in type 'Microsoft.CodeAnalysis.VisualBasic.Simplification.VisualBasicInferredMemberNameReducer' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'IsApplicable' in type 'Microsoft.CodeAnalysis.VisualBasic.Simplification.VisualBasicMiscellaneousReducer' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'IsApplicable' in type 'Microsoft.CodeAnalysis.VisualBasic.Simplification.VisualBasicNameReducer' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'IsApplicable' in type 'Microsoft.CodeAnalysis.VisualBasic.Simplification.VisualBasicParenthesesReducer' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'IsApplicable' in type 'Microsoft.CodeAnalysis.VisualBasic.Simplification.VisualBasicVariableDeclaratorReducer' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Could not load type 'Microsoft.CodeAnalysis.Simplification.Simplifiers.AbstractSimplifier2' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.Simplification.Simplifiers.AbstractSimplifier2' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.Simplification.Simplifiers.AbstractSimplifier2' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Method 'NodeRequiresNonSpeculativeSemanticModel' in type 'Microsoft.CodeAnalysis.VisualBasic.Simplification.VisualBasicSimplificationService' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Could not load type 'Microsoft.CodeAnalysis.Shared.Utilities.AbstractSpeculationAnalyzer7' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Method 'TryParsePdbCompilationOptions' in type 'Microsoft.CodeAnalysis.VisualBasic.VisualBasicCompilationFactoryService' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'GetUnnecessaryImports' in type 'Microsoft.CodeAnalysis.VisualBasic.RemoveUnnecessaryImports.VisualBasicUnnecessaryImportsProvider' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Method 'get_UnnecessaryImportsProvider' in type 'Microsoft.CodeAnalysis.VisualBasic.RemoveUnnecessaryImports.VisualBasicRemoveUnnecessaryImportsService' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.AbstractSelectedMembers5' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.IAccessibilityFacts' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.AbstractDocumentationCommentService10' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.AbstractFileBannerFacts' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.AbstractHeaderFacts' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.ISyntaxFacts' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.ISyntaxKinds' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.AbstractFileBannerFacts' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.AbstractHeaderFacts' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.AddImports.AbstractAddImportsService4' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.AbstractSemanticFactsService' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.ISymbolDeclarationService' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not load type 'Microsoft.CodeAnalysis.LanguageServices.TypeInferenceService.AbstractTypeInferenceService' from assembly 'Microsoft.CodeAnalysis.Workspaces, Version=4.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Method not found: 'System.Threading.Tasks.Task1<Microsoft.CodeAnalysis.Document> Microsoft.CodeAnalysis.CodeCleanup.Providers.ICodeCleanupProvider.CleanupAsync(Microsoft.CodeAnalysis.Document, System.Collections.Immutable.ImmutableArray1<Microsoft.CodeAnalysis.Text.TextSpan>, System.Threading.CancellationToken)'. Method not found: 'System.Threading.Tasks.Task1<Microsoft.CodeAnalysis.Document> Microsoft.CodeAnalysis.CodeCleanup.Providers.ICodeCleanupProvider.CleanupAsync(Microsoft.CodeAnalysis.Document, System.Collections.Immutable.ImmutableArray1<Microsoft.CodeAnalysis.Text.TextSpan>, System.Threading.CancellationToken)'. Method not found: 'System.Threading.Tasks.Task1<Microsoft.CodeAnalysis.Document> Microsoft.CodeAnalysis.CodeCleanup.Providers.ICodeCleanupProvider.CleanupAsync(Microsoft.CodeAnalysis.Document, System.Collections.Immutable.ImmutableArray1<Microsoft.CodeAnalysis.Text.TextSpan>, System.Threading.CancellationToken)'. Method not found: 'System.Threading.Tasks.Task1<Microsoft.CodeAnalysis.Document> Microsoft.CodeAnalysis.CodeCleanup.Providers.ICodeCleanupProvider.CleanupAsync(Microsoft.CodeAnalysis.Document, System.Collections.Immutable.ImmutableArray1<Microsoft.CodeAnalysis.Text.TextSpan>, System.Threading.CancellationToken)'. Method not found: 'System.Threading.Tasks.Task1<Microsoft.CodeAnalysis.Document> Microsoft.CodeAnalysis.CodeCleanup.Providers.ICodeCleanupProvider.CleanupAsync(Microsoft.CodeAnalysis.Document, System.Collections.Immutable.ImmutableArray1<Microsoft.CodeAnalysis.Text.TextSpan>, System.Threading.CancellationToken)'. Method not found: 'System.Threading.Tasks.Task1<Microsoft.CodeAnalysis.Document> Microsoft.CodeAnalysis.CodeCleanup.Providers.ICodeCleanupProvider.CleanupAsync(Microsoft.CodeAnalysis.Document, System.Collections.Immutable.ImmutableArray1<Microsoft.CodeAnalysis.Text.TextSpan>, System.Threading.CancellationToken)'. Method not found: 'System.Threading.Tasks.Task1<Microsoft.CodeAnalysis.Document> Microsoft.CodeAnalysis.CodeCleanup.Providers.ICodeCleanupProvider.CleanupAsync(Microsoft.CodeAnalysis.Document, System.Collections.Immutable.ImmutableArray1<Microsoft.CodeAnalysis.Text.TextSpan>, System.Threading.CancellationToken)'. Method 'get_SyntaxFacts' in type 'Microsoft.CodeAnalysis.VisualBasic.EmbeddedLanguages.VirtualChars.VisualBasicVirtualCharService' from assembly 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. Microsoft.CodeAnalysis.CodeCleanup.Providers.ICodeCleanupProvider.CleanupAsync(Microsoft.CodeAnalysis.Document, System.Collections.Immutable.ImmutableArray1<Microsoft.CodeAnalysis.Text.TextSpan>, System.Threading.CancellationToken)'. Method not found: 'System.Threading.Tasks.Task1<Microsoft.CodeAnalysis.Document> Microsoft.CodeAnalysis.CodeCleanup.Providers.ICodeCleanupProvider.CleanupAsync(Microsoft.CodeAnalysis.Document, '.`

Answer 1

I had the same error. When I upgraded Microsoft.EntityFrameworkCore references to version 8.0.0, I had to also updated my Microsoft.CodeAnalysis references to version 4.8.0 to resolve build errors. This let me rebuild my solution with no errors.

However, I still had the error about not being able to resolve types in Microsoft.CodeAnalysis.VisualBasic.Workspaces version 4.4.0. I was stumped because I did not have any references to version 4.4.0 in my project file.

I realized that I did not have an explicit reference to Microsoft.CodeAnalysis.VisualBasic.Workspaces in my project file, so VS was automatically referencing the old version of that library.

Solution: Add lines to your project file, with specific versions for the CodeAnalysis libraries. Here are my references that work:

<PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.0" />
<PackageReference Include="Microsoft.CodeAnalysis.Common" Version="4.8.0" />
<PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" />
<PackageReference Include="Microsoft.CodeAnalysis.Workspaces.Common" Version="4.8.0" />
<PackageReference Include="Microsoft.CodeAnalysis.VisualBasic" Version="4.8.0" />
<PackageReference Include="Microsoft.CodeAnalysis.VisualBasic.Workspaces" Version="4.8.0" />
<PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.8.0" />