Who contributed to .NET on July 28, 2026?

9 developers shipped this update, including Copilot, mrek-msft, Tanner Gooding, Jonathan Peppers, kubaflo, copilot-swe-agent, AbhitejJohn, and github-actions[bot], and 1 more.

What were the notable .NET updates?

Fix the net481 build break in AllocationHelper (#131417), Make wasm 'V' signature raising deterministic and add a regression test (#131429), and FileConfigurationProvider: Handle and forward IO exceptions to OnLoadException.

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The Wire · Showcase

RUNTIME CUTS NET481 BUILD BREAK, ANDROID TOOLS RELOCATE, MAUI PREPS RC1 CYCLE

By RepoJournal · Filed 07:01 UTC on July 28, 2026 · About .NET

9 people shipped this

Tanner Gooding @tannergooding 2 cited

Copilot @Copilot 1 cited

mrek-msft @mrek-msft 1 cited

Jonathan Peppers @jonathanpeppers 1 cited

kubaflo @kubaflo 1 cited

copilot-swe-agent @copilot-swe-agent 1 cited

AbhitejJohn @AbhitejJohn 1 cited

simonrozsival @simonrozsival 1 cited

github-actions[bot] @github-actions[bot]

A critical net481 regression in AllocationHelper is fixed across dotnet/runtime, while Android consolidates its tooling infrastructure and MAUI realigns its release milestone targeting.

The runtime team shipped a fix for a net481 build break in AllocationHelper [1] that broke the BCL.Memory.Tests shared compile when a prior commit switched from Marshal.AllocHGlobal to NativeMemory without accounting for framework targets where NativeMemory doesn't exist. In parallel, the runtime landed deterministic wasm signature raising [2] after a race condition in RaiseSignature resolution, plus FileConfigurationProvider now uniformly forwards IO exceptions to OnLoadException callbacks [3] instead of silently failing on reload. Over in Android, the team moved shipped tool libraries into src and tests into tests [4], consolidating the external/xamarin-android-tools hierarchy that no longer reflects repository ownership, and stripped redundant AsyncTask logging from LinkNativeRuntime [5] where NativeLinker already reports failures through coded errors. MAUI fixed its release-readiness milestone logic [6] so preview7 correctly rolls forward to rc1 rather than preview8, aligning the net11.0 merge flow target accordingly [7]. Across all 5 repos, 42 commits and 41 PRs landed; dotnet/skills hardened its /evaluate pipeline to bind runs to a single reviewed commit [8] instead of re-reading the live branch head. Performance tightened Android SizeOnDisk measurements to stage only the signed APK, filtering out mapping files and binlogs [9].

Action items

→ If running net481 builds: upgrade to include the AllocationHelper fix before your next release dotnet/runtime [immediate]
→ Android teams: verify tooling paths after the src/tests consolidation in your local builds dotnet/android [plan]
→ MAUI: confirm preview7-to-rc1 milestone logic is correct in your release automation dotnet/maui [monitor]
→ Skills users: test the new commit-bound /evaluate workflow to ensure predictable approval tracking dotnet/skills [plan]

References

[1] Fix the net481 build break in AllocationHelper (#131417) dotnet/runtime
[2] Make wasm 'V' signature raising deterministic and add a regression test (#131429) dotnet/runtime
[3] FileConfigurationProvider: Handle and forward IO exceptions to OnLoadException ↗ dotnet/runtime
[4] [build] Move Android tools projects into src and tests (#12215) dotnet/android
[5] [xabt] Remove redundant AsyncTask logging from LinkNativeRuntime (#12238) dotnet/android
[6] [release-readiness] Fix next-cycle milestone after preview7 (rc1, not preview8) (#36803) dotnet/maui
[7] Update net11.0 merge flow target to preview7 ↗ dotnet/maui
[8] Bind PR evaluation to the reviewed commit ↗ dotnet/skills
[9] [MAUI] Measure only APK in Android SOD jobs (#5265) dotnet/performance

Quick answers

What shipped in .NET on July 28, 2026?: A critical net481 regression in AllocationHelper is fixed across dotnet/runtime, while Android consolidates its tooling infrastructure and MAUI realigns its release milestone targeting. In total, 42 commits, 41 pull requests, and 1 releases landed.
Who contributed to .NET on July 28, 2026?: 9 developers shipped this update, including Copilot, mrek-msft, Tanner Gooding, Jonathan Peppers, kubaflo, copilot-swe-agent, AbhitejJohn, and github-actions[bot], and 1 more.
What were the notable .NET updates?: Fix the net481 build break in AllocationHelper (#131417), Make wasm 'V' signature raising deterministic and add a regression test (#131429), and FileConfigurationProvider: Handle and forward IO exceptions to OnLoadException.

MAUI CI SCANNER FIXED, MSBUILD ALIGNS TO .NET 10.0.10

A critical MAUI CI pipeline flaw that could pass builds with unscanned device tests is now patched, while MSBuild runtime dependencies ship their first 10.0.10 servicing bump.

dotnet 41 shipped 1-min read

@dotnet 3 days ago

WASM RUNTIME SHRINKS 3.6% AS DOTNET HARDENS DEBUGGER EXPORTS

The JIT compiler just cut 815 kilobytes from WebAssembly Core Library by folding address constants into load instructions, while the runtime fixed a silent failure in WASI debugging that would strip metadata from stripped binaries.

dotnet 13 shipped 1-min read

@dotnet 4 days ago

RUNTIME FIXES KERBEROS FALLBACK ON UNIX, APPHOST CONVERTS TO C

The managed SPNEGO implementation now falls back to NTLM when Kerberos credentials go missing on Linux, closing a critical auth gap that broke enterprise deployments [ref:1].

dotnet 120 shipped 1-min read

@dotnet 5 days ago

MACIOS DOCS OVERHAUL SPANS 31 TYPES, ASPNETCORE VALIDATION MOVES TO SOURCE GENERATION

Rolf Bjarne shipped 31 types with proper XML documentation across macios while aspnetcore refactors validation classes out of the public API entirely.

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