The most secure environment to pull down updates is your personalized dashboard: Autodesk Licensing Service - 9.4.0.2899 - Update

18;write_to_target_document1a;_dA_uafPrIqK3wN4Pv9jT8QQ_20;56; 0;1135;0;ac2;

If you are specifically looking for version 9 or the latest compatible version to fix a "License checkout timed out" or "Licensing Service is not running" error, follow these steps: