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ValidationsGenerator CS8785 when AddValidation is called from multiple sites in one project

area-minimalIncludes minimal APIs, endpoint filters, parameter binding, request delegate generator etcIncludes minimal APIs, endpoint filters, parameter binding, request delegate generator etc

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

Status: Open.

#66650 In dotnet/aspnetcore;

· BrendanRidenour opened on May 11, 2026

Perf regression: multiple_queries

area-perfPerformance infrastructure issuesPerformance infrastructure issues

perf-regression

Status: Open.

#66649 In dotnet/aspnetcore;

· pr-benchmarks opened on May 11, 2026

Support C# unions types in non-body parameter binding

area-minimalIncludes minimal APIs, endpoint filters, parameter binding, request delegate generator etcIncludes minimal APIs, endpoint filters, parameter binding, request delegate generator etc

feature-request

Status: Open.

#66648 In dotnet/aspnetcore;

· DeagleGross opened on May 11, 2026

Improve default Identity email wording for recipients who didn't initiate the action

area-identityIncludes: Identity and providersIncludes: Identity and providers

feature-request

Status: Open.

#66643 In dotnet/aspnetcore;

· rokonec opened on May 11, 2026

Quarantine Microsoft.AspNetCore.DataProtection.DataProtectionProviderTests.System_UsesProvidedCertificateNotFromStore

test-failure

Status: Open.

#66637 In dotnet/aspnetcore;

· github-actions opened on May 10, 2026

Lastest Microsoft.Extensions.Caching.SqlServer/10.0.7 references old Microsoft.Data.SqlClient 5.2.2

area-middlewareIncludes: URL rewrite, redirect, response cache/compression, session, and other general middlewaresIncludes: URL rewrite, redirect, response cache/compression, session, and other general middlewares

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

Status: Open.

#66636 In dotnet/aspnetcore;

· nefen opened on May 10, 2026

MapStaticAssets SPA fallback / default document doesn't work when index.html comes from a referenced project (esproj, RCL, NuGet package)

area-infrastructureIncludes: MSBuild projects/targets, build scripts, CI, Installers and shared frameworkIncludes: MSBuild projects/targets, build scripts, CI, Installers and shared framework

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

feature-static-web-assets

Status: Open.

Bug

#66620 In dotnet/aspnetcore;

· danroth27 opened on May 7, 2026

Benchmark stopped running: QueryCompilation

area-perfPerformance infrastructure issuesPerformance infrastructure issues

perf-regression

Status: Open.

#66618 In dotnet/aspnetcore;

· pr-benchmarks opened on May 7, 2026

[Blazor] Microsoft.AspNetCore.Components.Testing: GenerateE2EManifest task silently skipped because tasks/ folder is not where the targets file looks

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

Status: Open.

Bug

#66617 In dotnet/aspnetcore;

· danroth27 opened on May 7, 2026

·  

11.0-preview5

Static Assets + Blazor + JS import fails with integrity error on Azure

area-middlewareIncludes: URL rewrite, redirect, response cache/compression, session, and other general middlewaresIncludes: URL rewrite, redirect, response cache/compression, session, and other general middlewares

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

Status: Open.

Bug

#66612 In dotnet/aspnetcore;

· vividos opened on May 7, 2026

In Blazor Nullable<TimeSpan> generates error "The value '' is not valid for 'Property'." when value is empty

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

Status: Open.

Bug

#66607 In dotnet/aspnetcore;

· neoGeneva opened on May 6, 2026

·  

Backlog

Inconsistent handling of traceId serializing when using non camelCase json serialization

area-minimalIncludes minimal APIs, endpoint filters, parameter binding, request delegate generator etcIncludes minimal APIs, endpoint filters, parameter binding, request delegate generator etc

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

feature-problem-details

Status: Open.

Bug

#66603 In dotnet/aspnetcore;

· Youssef1313 opened on May 6, 2026

·  

Backlog