Hi today i download Horizon i click to the client and i see a logo and Error massage “Client stoped working” i need helo 
If Horizon did install, uninstall it and try a fresh install after downloading it from this link: https://www.horizonmb.com/client/v2/latest.php
If that doesn’t help make sure you have .Net Framework 3.5 installed. If you don’t, you can get it here: https://www.microsoft.com/en-us/download/details.aspx?id=25150
Try those suggestions and post back if you need more help.