Let us say that you would like to use Adobe Flash Player before it cannot be used anymore after December 2020. You would like to make the most out of it, but you have unfortunately blocked it.
You would need to go to the settings portion in Chrome.
You need to scroll going to the bottom portion of the page until you find “Select.”
Look for the “Privacy and Security” section so that you will see the list of permissions that are available.
You are most likely to find some details there that will let you know what you have blocked so far. Simply click on enable for Adobe Flash Player, and you would be able to start using it normally again.