Worked on the JanProvaznik/msbuild repository to enhance the SDK resolution process by implementing targeted error logging for scenarios involving a single SDK resolver. The approach involved introducing a dedicated resource string for clearer error messages, updating the mock loader strategy to support reliable single-resolver testing, and augmenting unit tests to verify correct logging behavior. Using C# and focusing on backend development, error handling, and unit testing, the changes improved diagnostic clarity and reduced debugging time. This work strengthened test coverage and increased the reliability of the SDK resolution pipeline, aligning with business goals of reducing build-time troubleshooting.