Hello @Pim_van_de_Vis 

I have an website that requires active X controls to be installed.  We are using Edge to run in IE mode.  Each time I login to the website I have to install the controls, they are not staying after the user logs out of the Horizon desktop.  I implemented the change per this post but they are still not staying installed. 

The website is Temenos and when you login there is a Download Controls option under the help menu.  When you click on that there are two controls that appear, a Temenos browser control and a ScriptX printing control (see 1st attached picture).  I install each control successfully, unfortunately when I logout of the Horizon desktop and log back in, the controls are no longer installed. 

When I logged in this time to the desktop, logged into the website, pulled up the Download Controls window, I received the message in the 2nd screenshot attached.  Closed it and attempted to install the control and it worked that time. 

This is working for ONE user at our location where they do NOT need to install the controls every time and unfortunately no one knows why.  All other users have to install the controls every time.

Any help is appreciated.