What version of client you are running?
Do you have any GPO for horizon clients? If yes, check if this is not disabled from GPO.
Can you try to upgrade horizon client to 4.10 and check?
What version of client you are running?
Do you have any GPO for horizon clients? If yes, check if this is not disabled from GPO.
Can you try to upgrade horizon client to 4.10 and check?