There is no legitimate “free download” of Autodesk PowerMill Ultimate 2020 from official sources, because Autodesk discontinued selling permanent licenses for older versions like 2020. Any website offering a “free full version” or cracked copy is almost certainly illegal and unsafe .
Searching for usually leads you to third-party websites, YouTube description links, or Telegram channels. Here is what is actually inside those "top" download packages:
He launched the application. The splash screen appeared—a sleek, dark grey icon. Then the interface loaded. It was beautiful. Rows of toolpaths, simulation windows, and the complex ribbon menu of PowerMill Ultimate 2020.
: Eligible students and educators can obtain a one-year free license for Autodesk products, including PowerMill, which is renewable as long as eligibility continues. Important Considerations for PowerMill 2020