To begin the Cireson Portal setup process, first download the installer package for your System Center version from https://downloads.cireson.com. The download will provide you with a zipped installer file that must first be extracted.
Before extracting the file, be sure to Unblock the contents to ensure there are no issues during the installation process. Right-click the file and select Properties, then check the box marked 'Unblock'. Click 'Ok'.
After unblocking the file, right-click again and select 'Extract All' and specify a location to extract the installer files.
Ensure the extracted folder does not have a number in brackets on the end eg (1) which you might get if you need to repeat this process.
Navigate to the extracted files and locate Cireson Setup.exe. Double-click the file to run the installer.
The setup process will now begin and you can resume the installation/upgrade instructions found here.