microsoft/WindowsAppSDK
Nov 2024 – Apr 2026
14 Months active
Languages Used
C#C++PowerShellXMLCMarkdownIDLMIDL3
Technical Skills
API IntegrationBuild AutomationBuild SystemsDebuggingDevOpsPackage Management
Howard Kapustein
PROFILE
Howard Kapustein
Over 14 months, contributed to microsoft/WindowsAppSDK by designing and implementing features that improved packaging, deployment, and cross-language data handling. Focused on robust API development in C++ and C#, including enhancements to ApplicationData for unpackaged apps and the introduction of a unified decimal data type across C++, C#, and WinRT. Addressed deployment reliability through build automation, CI/CD, and error handling improvements, while refining packaging workflows and diagnostics with PowerShell scripting and TraceLogging. Delivered stability and compatibility fixes, expanded test coverage, and streamlined developer onboarding, resulting in more reliable Windows application development and smoother integration for both developers and end users.
Overall Statistics
Feature vs Bugs
64%Features
Repository Contributions
34Total
Bugs
9
Commits
34
Features
16
Lines of code
28,634
Activity Months14
Your Network
4708 peopleSame Organization
@microsoft.com4683
GitOpsMember
Ananta GuptaMember
Abi GicicMember
Abigail HartmanMember
Abram SandersonMember
Adam EttenbergerMember
Alexandre GattikerMember
Ami HollanderMember
AndersMember
Work History
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026 achievement highlights for microsoft/WindowsAppSDK. Delivered a new data access capability for unpackaged apps within ApplicationData, including a new API surface and integration work, with tests and cleanup.
1 Commits • 1 Features
Apr 1, 2026April 2026 achievement highlights for microsoft/WindowsAppSDK. Delivered a new data access capability for unpackaged apps within ApplicationData, including a new API surface and integration work, with tests and cleanup.
April 2026
March 2026
1 Commits • 1 Features
Mar 1, 2026Month 2026-03: Focused on enabling WinAppSDK 2.x adoption via Bootstrapper updates and streamlined versioning. Key work included delivering Bootstrapper Version 2.x support with Semantic Versioning, dropping Compatibility.v1.x to reduce maintenance burden, and refining installer outputs to improve deployment reliability.
March 2026
1 Commits • 1 Features
Mar 1, 2026Month 2026-03: Focused on enabling WinAppSDK 2.x adoption via Bootstrapper updates and streamlined versioning. Key work included delivering Bootstrapper Version 2.x support with Semantic Versioning, dropping Compatibility.v1.x to reduce maintenance burden, and refining installer outputs to improve deployment reliability.
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026: Focused on delivering a substantial Package Volume Management API Enhancement in Windows App SDK, improving reliability and parity with Windows.Management.Deployment, while addressing a critical progress bug in package readiness.
1 Commits • 1 Features
Jan 1, 2026January 2026: Focused on delivering a substantial Package Volume Management API Enhancement in Windows App SDK, improving reliability and parity with Windows.Management.Deployment, while addressing a critical progress bug in package readiness.
January 2026
October 2025
3 Commits • 2 Features
Oct 1, 2025October 2025 (2025-10) monthly summary for microsoft/WindowsAppSDK: Delivered critical reliability improvements and developer-experience enhancements across packaging, MSIX APIs, and Detours integration. Implemented robust VCLibs installation logic to correctly detect the latest installed version and compare against available versions, preventing unnecessary installs. Added MSIX FindPackageFile*() API specifications to streamline file discovery within MSIX packages and their graphs, improving developer productivity and packaging performance. Updated Detours with upstream synchronization and official ARM64EC support, enhancing readability, error handling, memory management, and cross-architecture OS compatibility. Together, these efforts reduce installation errors, accelerate packaging workflows, and broaden support for ARM64-enabled Windows apps.
October 2025
3 Commits • 2 Features
Oct 1, 2025October 2025 (2025-10) monthly summary for microsoft/WindowsAppSDK: Delivered critical reliability improvements and developer-experience enhancements across packaging, MSIX APIs, and Detours integration. Implemented robust VCLibs installation logic to correctly detect the latest installed version and compare against available versions, preventing unnecessary installs. Added MSIX FindPackageFile*() API specifications to streamline file discovery within MSIX packages and their graphs, improving developer productivity and packaging performance. Updated Detours with upstream synchronization and official ARM64EC support, enhancing readability, error handling, memory management, and cross-architecture OS compatibility. Together, these efforts reduce installation errors, accelerate packaging workflows, and broaden support for ARM64-enabled Windows apps.
September 2025
4 Commits • 3 Features
Sep 1, 2025September 2025 performance summary for microsoft/WindowsAppSDK focused on stability, performance, and developer experience. Delivered key feature improvements, fixed critical issues, and strengthened tooling that directly impact build reliability, onboarding, and runtime performance. Highlights include DevCheck reliability enhancements, Detours usage optimization, and expanded DynamicDependencies cmdlets, underpinned by documentation updates and settings refactors that streamline developer setup.
4 Commits • 3 Features
Sep 1, 2025September 2025 performance summary for microsoft/WindowsAppSDK focused on stability, performance, and developer experience. Delivered key feature improvements, fixed critical issues, and strengthened tooling that directly impact build reliability, onboarding, and runtime performance. Highlights include DevCheck reliability enhancements, Detours usage optimization, and expanded DynamicDependencies cmdlets, underpinned by documentation updates and settings refactors that streamline developer setup.
September 2025
August 2025
4 Commits
Aug 1, 2025August 2025 monthly summary for microsoft/WindowsAppSDK focusing on packaging reliability, deployment stability, and distribution readiness. Key work this month centered on ensuring Windows SDK components are correctly packaged, published, and distributed, and on strengthening the Decimal support packaging to streamline downstream consumption via Transport, WindowsAppRuntime, and NuGet. The changes reduce packaging failures, improve build reproducibility, and accelerate downstream integration with CI and DevCheck tooling.
August 2025
4 Commits
Aug 1, 2025August 2025 monthly summary for microsoft/WindowsAppSDK focusing on packaging reliability, deployment stability, and distribution readiness. Key work this month centered on ensuring Windows SDK components are correctly packaged, published, and distributed, and on strengthening the Decimal support packaging to streamline downstream consumption via Transport, WindowsAppRuntime, and NuGet. The changes reduce packaging failures, improve build reproducibility, and accelerate downstream integration with CI and DevCheck tooling.
July 2025
2 Commits • 1 Features
Jul 1, 2025July 2025 (2025-07): Focused on stabilizing the Decimal API in microsoft/WindowsAppSDK and cleaning up metadata to improve reliability and maintainability. Delivered targeted API surface cleanup around string handling with zstring_view/zwstring_view abstractions and IDL metadata simplification, reinforced by tests. These changes reduce parsing edge cases, improve downstream reliability, and set the stage for future Decimal enhancements.
2 Commits • 1 Features
Jul 1, 2025July 2025 (2025-07): Focused on stabilizing the Decimal API in microsoft/WindowsAppSDK and cleaning up metadata to improve reliability and maintainability. Delivered targeted API surface cleanup around string handling with zstring_view/zwstring_view abstractions and IDL metadata simplification, reinforced by tests. These changes reduce parsing edge cases, improve downstream reliability, and set the stage for future Decimal enhancements.
July 2025
June 2025
3 Commits • 2 Features
Jun 1, 2025June 2025 performance summary for microsoft/WindowsAppSDK focusing on cross-language interoperability and observability improvements. Delivered two high-impact items: (1) Unified Decimal IDL and Cross-Language Decimal Representation, standardizing decimal handling across C#, C++, and WinRT, with locale-aware parsing/formatting, invariant/system defaults, and safer parsing via TryFromString. (2) TraceLogging Enhancements for Diagnostics, adding missing fields and removing duplicates across deployment and package management, improving failure-event clarity and package-resolution diagnostics. These updates reduce integration risk, accelerate issue diagnosis, and enhance developer and end-user experiences through more reliable data handling and observability across the SDK.
June 2025
3 Commits • 2 Features
Jun 1, 2025June 2025 performance summary for microsoft/WindowsAppSDK focusing on cross-language interoperability and observability improvements. Delivered two high-impact items: (1) Unified Decimal IDL and Cross-Language Decimal Representation, standardizing decimal handling across C#, C++, and WinRT, with locale-aware parsing/formatting, invariant/system defaults, and safer parsing via TryFromString. (2) TraceLogging Enhancements for Diagnostics, adding missing fields and removing duplicates across deployment and package management, improving failure-event clarity and package-resolution diagnostics. These updates reduce integration risk, accelerate issue diagnosis, and enhance developer and end-user experiences through more reliable data handling and observability across the SDK.
May 2025
1 Commits
May 1, 2025Month 2025-05 – WindowsAppSDK (microsoft/WindowsAppSDK) performance summary focused on Decimal data type improvements. Delivered a targeted refactor of the Decimal data type to improve robustness, maintainability, and testability, with practical business value for apps relying on precise decimal arithmetic.
1 Commits
May 1, 2025Month 2025-05 – WindowsAppSDK (microsoft/WindowsAppSDK) performance summary focused on Decimal data type improvements. Delivered a targeted refactor of the Decimal data type to improve robustness, maintainability, and testability, with practical business value for apps relying on precise decimal arithmetic.
May 2025
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for microsoft/WindowsAppSDK focusing on stability, compatibility, and experimental feature work. Key efforts include a bootstrapper compatibility fix with the Win11 DynamicDependency API and the introduction of an experimental decimal data type across languages, supported by targeted unit tests and cross-language validation.
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for microsoft/WindowsAppSDK focusing on stability, compatibility, and experimental feature work. Key efforts include a bootstrapper compatibility fix with the Win11 DynamicDependency API and the introduction of an experimental decimal data type across languages, supported by targeted unit tests and cross-language validation.
March 2025
3 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for microsoft/WindowsAppSDK focused on delivering reliable deployment tooling and robust telemetry. Key features delivered include TAEF Service Management Enhancements and telemetry/stop-event reliability improvements for the PackageDeploymentManager. These changes enhance cross-environment reliability, observability, and deployment correctness, driving faster issue diagnosis and more predictable release outcomes.
3 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for microsoft/WindowsAppSDK focused on delivering reliable deployment tooling and robust telemetry. Key features delivered include TAEF Service Management Enhancements and telemetry/stop-event reliability improvements for the PackageDeploymentManager. These changes enhance cross-environment reliability, observability, and deployment correctness, driving faster issue diagnosis and more predictable release outcomes.
March 2025
February 2025
5 Commits • 2 Features
Feb 1, 2025February 2025: Delivered reliability and clarity in WindowsAppSDK packaging, deployment versioning, and testing infrastructure. Key features included robust versioning correctness, output filename derivation for TerminalVelocity, and streamlined test coverage. These work items improve deployment accuracy, reduce risk from packaging regressions, speed up CI feedback, and improve developer experience.
February 2025
5 Commits • 2 Features
Feb 1, 2025February 2025: Delivered reliability and clarity in WindowsAppSDK packaging, deployment versioning, and testing infrastructure. Key features included robust versioning correctness, output filename derivation for TerminalVelocity, and streamlined test coverage. These work items improve deployment accuracy, reduce risk from packaging regressions, speed up CI feedback, and improve developer experience.
December 2024
1 Commits
Dec 1, 2024December 2024 monthly summary for microsoft/WindowsAppSDK focused on stabilizing Detour-related runtime exports. Delivered a targeted bug fix by exporting DetourFinishHelperProcess in WindowsAppRuntime.def to fix DetourIsHelperProcess, tied to commit afb92af4e1ff11b763b3e25ee2923bc3dc9946f2. Impact: restores correct helper-process behavior, reducing runtime errors for apps relying on Detour-based workflows and improving overall runtime reliability. Technologies/skills demonstrated: Windows .def exports, WindowsAppSDK build and release workflow, commit discipline and traceability across repo.
1 Commits
Dec 1, 2024December 2024 monthly summary for microsoft/WindowsAppSDK focused on stabilizing Detour-related runtime exports. Delivered a targeted bug fix by exporting DetourFinishHelperProcess in WindowsAppRuntime.def to fix DetourIsHelperProcess, tied to commit afb92af4e1ff11b763b3e25ee2923bc3dc9946f2. Impact: restores correct helper-process behavior, reducing runtime errors for apps relying on Detour-based workflows and improving overall runtime reliability. Technologies/skills demonstrated: Windows .def exports, WindowsAppSDK build and release workflow, commit discipline and traceability across repo.
December 2024
November 2024
3 Commits • 1 Features
Nov 1, 2024November 2024 — WindowsAppSDK: Delivered stability enhancements and cross-version compatibility improvements, translating to tangible business value through fewer install-time failures and smoother developer workflows.
November 2024
3 Commits • 1 Features
Nov 1, 2024November 2024 — WindowsAppSDK: Delivered stability enhancements and cross-version compatibility improvements, translating to tangible business value through fewer install-time failures and smoother developer workflows.
Activity
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Quality Metrics
Correctness88.0%
Maintainability86.2%
Architecture85.0%
Performance79.4%
AI Usage22.4%
Skills & Technologies
Programming Languages
CC#C++IDLMIDL3MarkdownPowerShellXMLYAML
Technical Skills
API DesignAPI DevelopmentAPI IntegrationApplication data managementBuild AutomationBuild EngineeringBuild SystemsBuild ToolsC#C++C++ DevelopmentC++ developmentCI/CDCode AnalysisConcurrency Control
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