How do I install ZBlock first ?

Get the setup file

This is pretty easy, just go to the releases page and download it.

Install the certificate

Before you start the installation of the software you will have to install the certificate of the setup, so your system don't fails at installing the program. For that, go to Properties > Digital signatures > Select the signature in the table > Details > View Certificate > Install Certificate Now a certificate installation wizard will open, follow the instructions on screen until it asks you where should the certificate be installed, choose the 2nd folder that appears. Now you're good to go !

Install the software

Now that the certificate is installed, you won't fail at installing the software, just install it like any other software.