Worked on the dotnet/razor repository to address a regression affecting Error List loading when using Intellicode in Visual Studio. Focused on stabilizing the asynchronous retrieval of services during error descriptor loading by refactoring the GetTaskListDescriptorsAsync method in OptionsStorage.cs. Utilized C# and async programming techniques to integrate IAsyncServiceProvider, which improved both reliability and startup performance of the Error List feature. The work centered on resolving a critical bug rather than adding new features, demonstrating a targeted approach to maintaining code quality and ensuring a smoother developer experience within the Visual Studio environment for Razor and Intellicode users.