As a security mechanism, Windows natively lets you unzip files by right-clicking and choosing Extract All.. Well, you can skip the manual unblocking of the files by using 7-Zip to extract the files instead of Windows’ mechanism.
We want to get rid of a message you might have seen over and over when downloading files from the internet. "This file came from another computer and might be blocked to help protect this computer," next to an Unblock button. If you know about this, it's fine to unblock a couple files, but it's really annoying when you download a zip containing dozens of files which you have to unblock individually, one by one.
Download and install 7-Zip and unzip downloaded plugins with right-click > 7-Zip > Extract here, or any of the other extraction options.
This issue has given me a lot of headaches when installing both Dynamo and Grasshopper plugins, but you might run into this issue in other environments as well. I'm glad there's an alternative to unlocking each file--might it be
exe or files in another formats--separately, unzipping a group of files, all unlocked, at once.