.NET🟡 Intermediate📖 8-12 min read
Fix gRPC Client Channel State Transient Failure
gRPC client channel enters TransientFailure state after connection issues, and does not automatically recover to Ready state without proper configuration.
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.NET fixes
Published troubleshooting guides for .net issues.
62 guides available
.NET🟡 Intermediate📖 8-12 min read
Fix Azure Key Vault Secret Client Authentication 403 Forbidden
Azure Key Vault secret client returns 403 Forbidden when the managed identity or service principal lacks the required access policy or RBAC permissions.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix Polly Retry Policy Not Catching AggregateException
Polly retry policies do not retry when exceptions are wrapped in AggregateException, because the policy handles only the outer exception type.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix Serilog Enricher Not Adding Property to Log Context
Serilog enrichers do not add expected properties to log output due to incorrect registration, scope context issues, or sink configuration problems.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix ASP.NET Core Middleware Order Incorrect Pipeline
ASP.NET Core middleware executes in registration order, and incorrect ordering causes authentication bypass, missing error handling, or static file failures.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix BackgroundService ExecuteAsync Unhandled Exception Crash
Unhandled exceptions in BackgroundService ExecuteAsync crash the entire .NET host process, taking down all other services and hosted applications.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix Blazor Server SignalR Dropped Connection Page Refresh
Blazor Server loses its SignalR circuit when the connection drops, causing the page to show a reconnection failure message instead of recovering.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix Docker Unable to Load Native Assembly on Linux
.NET application in Docker container fails to load native assemblies due to missing runtime dependencies, wrong architecture, or glibc incompatibility.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix ASP.NET Core Identity Password Hash Verification Failed
ASP.NET Core Identity password verification fails after migration, password hasher change, or database seeding with incorrect hash format.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix appsettings.json Configuration Provider Not Loading Values
ASP.NET Core configuration does not load values from appsettings.json due to file path issues, environment overrides, or provider ordering problems.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix JSON Serialization Max Depth Exceeded Circular Reference
System.Text.Json serializer throws JsonException when object graphs exceed the maximum depth, typically due to circular references in entity relationships.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix DI Scoped Service Resolved from Singleton Lifetime Error
ASP.NET Core dependency injection throws InvalidOperationException when a scoped service is injected into a singleton, creating captive dependencies.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix HttpClient Cancelled CancellationToken Timeout Error
HttpClient requests are cancelled when the CancellationToken fires, causing OperationCanceledException that must be handled differently from other errors.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix EF Core Migration Pending Model Has Changed Error
Entity Framework Core detects that the database model does not match the current entity configuration, requiring a new migration.
Open guide .NET🟡 Intermediate📖 8-12 min read
Fix Kestrel Address Already in Use on ASP.NET Core Startup
Kestrel web server fails to start because the configured port is already bound by another process, causing ASP.NET Core application startup failure.
Open guide .NET🟡 Intermediate📖 8-12 min read
Entity Framework Query N Plus One Fix
Fix N+1 query problems with eager loading and projection optimization.
Open guide .NET🟡 Intermediate📖 8-12 min read
.NET Advanced Troubleshooting Topic 1
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.NET Advanced Troubleshooting Topic 37
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.NET Advanced Troubleshooting Topic 4
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.NET Advanced Troubleshooting Topic 9
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.NET Core Startup High Memory Usage Fix
Optimize .NET startup memory with tiered compilation and server GC settings.
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