{"record":{"id":"12d0692927c36a06","repo":"abpframework/abp","slug":"an-error-occurred-during-configureservices-phase-o","errorCode":null,"errorMessage":"An error occurred during ConfigureServices phase of the module {module.Type.AssemblyQualifiedName}. See the inner exception for details.","messagePattern":"An error occurred during ConfigureServices phase of the module (.+?)\\. See the inner exception for details\\.","errorType":"exception","errorClass":"AbpInitializationException","httpStatus":null,"severity":"critical","filePath":"framework/src/Volo.Abp.Core/Volo/Abp/AbpApplicationBase.cs","lineNumber":365,"sourceCode":"                {\n                    foreach (var assembly in module.AllAssemblies)\n                    {\n                        if (!assemblies.Contains(assembly))\n                        {\n                            Services.AddAssembly(assembly);\n                            assemblies.Add(assembly);\n                        }\n                    }\n                }\n            }\n\n            try\n            {\n                module.Instance.ConfigureServices(context);\n            }\n            catch (Exception ex)\n            {\n                throw new AbpInitializationException($\"An error occurred during {nameof(IAbpModule.ConfigureServices)} phase of the module {module.Type.AssemblyQualifiedName}. See the inner exception for details.\", ex);\n            }\n        }\n\n        //PostConfigureServices\n        foreach (var module in Modules.Where(m => m.Instance is IPostConfigureServices))\n        {\n            try\n            {\n                ((IPostConfigureServices)module.Instance).PostConfigureServices(context);\n            }\n            catch (Exception ex)\n            {\n                throw new AbpInitializationException($\"An error occurred during {nameof(IPostConfigureServices.PostConfigureServices)} phase of the module {module.Type.AssemblyQualifiedName}. See the inner exception for details.\", ex);\n            }\n        }\n\n        foreach (var module in Modules)\n        {","sourceCodeStart":347,"sourceCodeEnd":383,"githubUrl":"https://github.com/abpframework/abp/blob/7ed43b1931b9df46a50c0c59148a18645641d0df/framework/src/Volo.Abp.Core/Volo/Abp/AbpApplicationBase.cs#L347-L383","documentation":"The synchronous counterpart of error 242. ABP iterates all modules and calls ConfigureServices(context), the main service-registration phase. If any module throws, ABP wraps the original in AbpInitializationException naming the module's AssemblyQualifiedName with the original as InnerException. This is a high-frequency failure point because most DI setup happens here.","triggerScenarios":"A module's ConfigureServices override throws: conflicting service registration, missing dependent service, options-configuration exception, or an EF Core helper invoked too early.","commonSituations":"DbContext misconfiguration; AddDbContext with a bad connection string; circular dependency between modules; ABP upgrade with a breaking registration change; third-party module missing an expected config section.","solutions":["Read ex.InnerException first - it holds the actual exception and stack trace.","Open the ConfigureServices override of the module named in the message.","Check appsettings.json (ConnectionStrings, the module's options section) for missing or malformed values.","Enable startup debug logging to see which registration failed."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"try\n{\n    application.ConfigureServices();\n}\ncatch (AbpInitializationException ex) when (ex.Message.Contains(\"ConfigureServices\"))\n{\n    startupLogger.LogError(ex.InnerException, \"Configure failed in {Module}\", ex.Message);\n    throw;\n}","preventionTips":["Always drill into ex.InnerException for ConfigureServices failures.","Keep ConfigureServices overrides small and testable.","Validate connection strings and option sections before ConfigureServices runs."],"tags":["module-system","initialization","configure","sync"],"backgroundTag":null,"analyzedSha":"7ed43b1931b9df46a50c0c59148a18645641d0df","analyzedAt":"2026-08-13T16:26:11.351Z","schemaVersion":2},"datasetVersion":"2026-08-13T19:17:28.613Z"}