When you launch a Web Browser (http/https) in Internet Explorer directly (external mode), the script errors are handled by the browser, so they are not displayed. In embedded mode, you need to enable the Hide script error in the properties of your session.
This issue occurs when a specific option is unchecked for IE in Tools -> Internet Options -> Advanced
The option is called Enable third-party browser extensions. After enabling this option, IE must be restarted.
IE Advanced Options
By default Remote Desktop Manager does not use the latest IE version (emulation mode). This can be changed in File – Options – Type – Web, IE Mode.
When a crash occurs in Remote Desktop Manager while using some ActiveX in IE, it's often caused by Data Execution Prevention (DEP). DEP is a security feature included in Windows. It is used to prevent an application or service from executing code from a non-executable memory region.
To fix this, simply change the DEP settings for the application as follows:
1.Right Click My Computer – Properties.
2.Choose Advanced System Settings.
3.Click the Advanced Tab.
4.Click Settings under Performance.
5.Select the tab Data Execution Prevention.
6.Add RDM to the list.
You may have noticed that when you launch items such as IE windows from within RDM, they pop-up in the background.
The ForegroundLockTimeout registry value for the User’s Profile has to be modified from the default of 200000 down to 0:
Please note that some programs that have an extensive library of add-ons (Like MS Word) may take the focus every time the add-on performs an action. You have to observe the reaction of your most used programs and judge what is the setup that works best for you.