Convert Your PowerPoint Presentation to HTML5 with HTML5Point 4.0
You might not have installed Visual Basic for Applications (VBA) support during the Office installation process. Please install this feature by running the Office setup program again using Add/Remove programs section of Control Panel. If you are still having the problem, please try the solution to the next question [What else should I do to make the toolbar appear in PowerPoint?].
To resolve this issue please check your target output path folder permission. You need to give necessary folder permission for the output folder.
Follow the steps below to give folder permissions: