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This change can also be done by making a group policy:
- add mediahaven website to trusted websites.
- To control settings for script access to the Clipboard, use the policy named Allow cut, copy or paste operations from the clipboard via script. It should be located in the path:
Local Computer Policy/{User Configuration, Computer Configuration}/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/{Zone}
- To control permissions for script access to the Clipboard on the computer for applications that host the WebBrowser control, we also have a policy named Enable cut, copy or paste operations from the clipboard if URLACTION_SCRIPT_PASTE is set to Prompt.
The paths for this policy are:
Local Computer Policy/Administrative Templates/Windows Components/Internet Explorer/Application Compatibility
and
User Configuration/Administrative Templates/Windows Components/Internet Explorer/Application Compatibility
You can read more information here.