also try the below:
1- if you have more than one connection server , try to connect to each one my its name or IP
2- try to change the client ip address and try to change the network port
3- check windows logs for errors along with horizon client
also try the below:
1- if you have more than one connection server , try to connect to each one my its name or IP
2- try to change the client ip address and try to change the network port
3- check windows logs for errors along with horizon client