Only if you are experiencing crashes. Uninstalling may break older games. To uninstall: Control Panel > Programs and Features > View Installed Updates > locate the KB number > Uninstall.
Download the Microsoft DirectX Patch 6.2.9200 if: Microsoft Directx Patch 6.2.9200 Download
Avoid this patch if:
Cause: Background processes locking system files. Fix: Boot into Safe Mode with Networking and run the installer again. Only if you are experiencing crashes