I click to open the horizon as administrator appears the title and then just closing. How to solve this?
Try to fully reinstall Horizon from scratch, and temporarily disable any AntiVirus software, as well as Firewall on your system.
You can also add “Horizon” as an exception/exclusion, if using any AntiVirus/AV, but better turn it off, for the time being.
Re-download Horizon from WEMOD’s official webpage, which is this, and run it as an Administrator/ADMIN. :
Make sure .NET Framework, VC++ Redistributable Package, as well as the Windows Installer package/files are properly configured and updated on your system, and there are no missing/corrupt registry entries.