While using patched Acrobat 9 Pro in 2025 is technically possible, it is not recommended for daily, internet-connected work. Treat it as a legacy tool for specific workflows—not your primary PDF solution.
If you try to run the update, (before the date change in the next step), adobe will tell you that there are no updates. Try this - Acrobat 9 patches - SolarWinds THWACK patch for adobe acrobat 9 pro