For 99% of users, the correct answer is to use for browser gaming or Flashpoint for archiving. The days of the browser plugin are over. If you absolutely must have the original Adobe software, restrict it to a virtual machine with no network access, and never use it for mainstream web browsing.
This is a self-contained .exe file that runs Flash content without a browser and without security risks. It is still legally available from Adobe’s official website under the “Distribution” section. Adobe Flash Player Download For Windows 10 64-bit
A: The browser plugin will not work because Microsoft and browser vendors have disabled it at the API level. The standalone projector works fine. For 99% of users, the correct answer is