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OpenAug 21, 2026
Due by November 9, 2027
•Last updated Previews, Release Candidates (RC), and General Availability (GA) releases for .NET 12
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[wasm][coreCLR] workaround: Reject R2R methods whose TypeHandle fixup cannot be tokenized
arch-wasmWebAssembly architectureWebAssembly architectureStatus: Closed (abandoned).[ci-scan] Hang: System.Runtime.Tests on tvos-arm64 Debug CoreCLR_Smoke
blocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Blocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tabos-iosApple iOSApple iOSStatus: Closed (completed).#129602 In dotnet/runtime;Test failure: System.Net.Quic.Tests.QuicStreamTests.MultipleReadsAndWrites
blocking-clean-ci-optionalBlocking optional rolling runsBlocking optional rolling runsJitStressCLR JIT issues involving JIT internal stress modesCLR JIT issues involving JIT internal stress modesStatus: Closed (completed).#121567 In dotnet/runtime;Vague exception thrown when static CreateHostBuilder method cannot be found by HostFactoryResolver
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.Status: Closed (completed).#106154 In dotnet/runtime;[Wasm RyuJIT] Contain Load Offsets When Possible
arch-wasmWebAssembly architectureWebAssembly architecturearea-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 SuperPMIStatus: Closed (completed).#128053 In dotnet/runtime;[Wasm RyuJIT] Switch from Const Reloc -> Offset Reloc for Call Codegen
arch-wasmWebAssembly architectureWebAssembly architecturearea-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 SuperPMIStatus: Closed (completed).#127467 In dotnet/runtime;[ILVerify] Add option for validation of all dependencies
area-Tools-ILVerificationIssues related to ilverify tool and IL verification in generalIssues related to ilverify tool and IL verification in generalin-prThere is an active PR which will close this issue when it is mergedThere is an active PR which will close this issue when it is mergedPriority:2Work that is important, but not critical for the releaseWork that is important, but not critical for the releaseStatus: Closed (completed).#96458 In dotnet/runtime;Semaphore performance issue
tenet-performancePerformance related issuePerformance related issueStatus: Closed (completed).#113411 In dotnet/runtime;- Status: Closed (abandoned).
Switch Default CI Focus to osx-arm64 for CoreCLR PRs
Priority:2Work that is important, but not critical for the releaseWork that is important, but not critical for the releaseStatus: Closed (completed).#108570 In dotnet/runtime;- Status: Closed (completed).#129558 In dotnet/runtime;
STAThreadAttribute is unnecessarily being left in a Blazor WASM default app
arch-wasmWebAssembly architectureWebAssembly architecturein-prThere is an active PR which will close this issue when it is mergedThere is an active PR which will close this issue when it is mergedsize-reductionIssues impacting final app size primary for size sensitive workloadsIssues impacting final app size primary for size sensitive workloadsStatus: Closed (completed).#47861 In dotnet/runtime;[wasm][coreCLR] R2R
delegate* unmanaged<>call to[UnmanagedCallersOnly]method traps withindirect call signature mismatcharch-wasmWebAssembly architectureWebAssembly architectureos-browserBrowser variant of arch-wasmBrowser variant of arch-wasmStatus: Closed (completed).#129857 In dotnet/runtime;[browser][coreCLR][nodejs] implement synchronous DLL loading
arch-wasmWebAssembly architectureWebAssembly architectureStatus: Closed (completed).#79981 In dotnet/runtime;- Status: Closed (completed).#130620 In dotnet/runtime;
Multiple Helix work items fail on maccatalyst/tvos CoreCLR Release
Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tabos-maccatalystMacCatalyst OSMacCatalyst OSos-tvosApple tvOSApple tvOSStatus: Closed (completed).#126460 In dotnet/runtime;[browser][WBT] - make WBT test schedule helix jobs in parallel
arch-wasmWebAssembly architectureWebAssembly architectureos-browserBrowser variant of arch-wasmBrowser variant of arch-wasmStatus: Closed (completed).#118938 In dotnet/runtime;[wasm coreclr] cache GetCookieForCalliSig
arch-wasmWebAssembly architectureWebAssembly architectureStatus: Closed (completed).#119485 In dotnet/runtime;[browser] Improve errors for failed asset download
arch-wasmWebAssembly architectureWebAssembly architectureos-browserBrowser variant of arch-wasmBrowser variant of arch-wasmStatus: Closed (completed).#121004 In dotnet/runtime;- Status: Closed (completed).#129649 In dotnet/runtime;
- Status: Closed (completed).#125801 In dotnet/runtime;
[browser][mono] remove debug proxy
arch-wasmWebAssembly architectureWebAssembly architectureNO-MERGEThe PR is not ready for merge yet (see discussion for detailed reasons)The PR is not ready for merge yet (see discussion for detailed reasons)os-browserBrowser variant of arch-wasmBrowser variant of arch-wasmStatus: Closed (abandoned).[ci-scan] Test failure: System.Globalization.Tests.IdnMappingGetUnicodeTests DllNotFoundException 'libSystem.Globalization.Native' on browser-wasm CoreCLR
arch-wasmWebAssembly architectureWebAssembly architectureblocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Blocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tabStatus: Closed (completed).#130479 In dotnet/runtime;[ci-scan] Test failure: browser-wasm - invalid value type 'exn', enable with --experimental-wasm-exnref
arch-wasmWebAssembly architectureWebAssembly architectureKnown Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tabos-browserBrowser variant of arch-wasmBrowser variant of arch-wasmStatus: Closed (completed).#130571 In dotnet/runtime;iOS tests failing with WORKLOAD TIMED OUT - Killing user command.
blocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Blocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tabos-iosApple iOSApple iOSStatus: Closed (completed).#108103 In dotnet/runtime;