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Crash in System.Net.NetworkInformation.SystemNetworkInterface.InternalGetIsNetworkAvailable -> System.Net.NetworkInformation.SystemIPv4InterfaceProperties.GetPerAdapterInfo

area-System.Net

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#123414 In dotnet/runtime;

· rar222 opened on Jan 21, 2026

[Bug] Mixed mode debugging step-in not working through some PInvoke calls

area-Diagnostics-coreclr

Status: Open.

Bug

#123410 In dotnet/runtime;

· max-charlamb opened on Jan 20, 2026

·  

11.0.0

ExcludeFromCodeCoverageAttribute can't be applied to interfaces

area-System.Diagnostics

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#123405 In dotnet/runtime;

· mconnew opened on Jan 20, 2026

Update Node.js in Microsoft.NET.Runtime.Emscripten.3.1.56.Node.win-x64

arch-wasmWebAssembly architectureWebAssembly architecture

area-Build-mono

Status: Open.

#123404 In dotnet/runtime;

· ZephyrZiggurat opened on Jan 20, 2026

·  

9.0.x

JIT: Mask AND with zero incorrectly folded

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMICLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#123399 In dotnet/runtime;

· saucecontrol opened on Jan 20, 2026

[API Proposal]: EditorBrowsableState for within a single solution

api-suggestionEarly API idea and discussion, it is NOT ready for implementationEarly API idea and discussion, it is NOT ready for implementation

area-System.ComponentModel

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#123398 In dotnet/runtime;

· ladeak opened on Jan 20, 2026

APP_CRASH SIGABRT during coreclr_initialize on tvOS device (vm_map_enter allocation failure)

arch-arm64

area-VM-coreclr

Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tab

os-tvosApple tvOSApple tvOS

test-failure

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#123396 In dotnet/runtime;

· matouskozak opened on Jan 20, 2026

[API Proposal]: Add support for JPEG XL image format

api-suggestionEarly API idea and discussion, it is NOT ready for implementationEarly API idea and discussion, it is NOT ready for implementation

needs-area-labelAn area label is needed to ensure this gets routed to the appropriate area ownersAn area label is needed to ensure this gets routed to the appropriate area owners

needs-author-actionAn issue or pull request that requires more info or actions from the author.An issue or pull request that requires more info or actions from the author.

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#123383 In dotnet/runtime;

· wstaelens opened on Jan 20, 2026

Process: SafeChildProcessHandle and option bag

api-ready-for-reviewAPI is ready for review, it is NOT ready for implementationAPI is ready for review, it is NOT ready for implementation

area-System.Diagnostics.Process

Status: Open.

#123380 In dotnet/runtime;

· adamsitnik opened on Jan 20, 2026

·  

11.0.0

[Perf] Linux/x64: 1 Regression on 1/12/2026 7:53:53 PM +00:00

arch-x64

area-System.Net

os-linuxLinux OS (any supported distro)Linux OS (any supported distro)

runtime-coreclrspecific to the CoreCLR runtimespecific to the CoreCLR runtime

Status: Open.

#123394 In dotnet/runtime;

· performanceautofiler opened on Jan 20, 2026

·  

11.0.0

Add [DebuggerStepThrough] to ArgumentNullException.ThrowIfNull

area-System.Runtime

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#123376 In dotnet/runtime;

· scoraig52 opened on Jan 20, 2026

[Perf] Windows/x64: 8 Regressions on 1/14/2026 1:50:43 AM +00:00

arch-x64

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMICLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

os-windows

runtime-coreclrspecific to the CoreCLR runtimespecific to the CoreCLR runtime

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#123391 In dotnet/runtime;

· performanceautofiler opened on Jan 20, 2026