Worked on enhancing Windows interoperability within the dotnet/wpf repository by upgrading the Microsoft.Windows.CsWin32 package to version 0.3.269. This update focused on improving .NET Windows desktop application performance and stability by addressing interop bugs and reducing runtime friction. The technical approach involved careful package management and integration, leveraging dotnet development skills and XML for configuration. By streamlining the interop layer, the work enabled more predictable application behavior and laid the groundwork for future Windows integration features. The contribution was delivered as a single feature commit, reflecting a targeted and methodical approach to improving the reliability of WPF applications on Windows.