TTMSFNCWebBrowser: Simulate unsuccessful initialization at run time?

At design time, TTMSFNCWebBrowser shows its successful initialization:

How can I SIMULATE an UNSUCCESSFUL INITIALIZATION at run-time FOR TESTING PURPOSES? In case of unsuccessful initialization at run-time, is the user automatically presented with a friendly (customizable) error message dialog prompting him to download and install a specific file?

I want to make this as painless as possible for the user.

Take a look here:

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