Worked on enhancing the reliability of the coturn/coturn repository by addressing a critical bug in the Windows _WTA input path. Focused on C development for Windows, the work involved implementing defensive checks for null input buffers, which reduced the risk of crashes and improved system stability for real-time communication scenarios. The solution was delivered as a targeted bug fix with minimal code changes, ensuring performance was maintained while increasing robustness. All modifications were clearly linked to issue #1624, supporting traceability and future quality assurance efforts. This contribution demonstrated attention to operational risk and platform-specific reliability in Windows environments.