To fix the problem in your HTML Executable publications, make sure Windows 10 Update (KB3133431) for Adobe Flash Player for IE and Microsoft Edge is installed.
Here’s the summary of the update according to the Microsoft Support page:
This update resolves a problem in which Adobe Flash
Player does not load correctly in applications that are running
in Internet Explorer or Microsoft Edge and that have Flash Player
embedded. This problem occurs after security update 3132372 for Adobe Flash is installed on Windows 10.
The update addresses the issue in Windows 10 Version 1511 (November Update) and previous versions of Windows including Server.