Worked on enhancing the AddressSanitizer known issues documentation in the MicrosoftDocs/cpp-docs repository, focusing on clarifying the behavior of thread-local variables under ASan. Used Markdown to update asan-known-issues.md, adding a dedicated section that explains thread-local variables are not protected by ASan due to implementation limitations. Improved the clarity and readability of related notes to help developers avoid confusion and misuse. Addressed a typographical error to ensure accurate communication of technical details. The work emphasized precise documentation practices and clear technical writing, contributing to more reliable developer guidance and reducing the risk of misinterpretation in C++ development environments.