Is there any reason why a htmlviewer would not be able to load a https served page?
Unsupported server protocol / cryptography options comes to mind.
Is this in the Web category because you’re talking about a web app?
In Web Apps, HTMLViewers are iframes. You could be trying to put a something into an iframe that doesn’t allow being embedded like that. Out of the box Xojo Web Apps block being embedded in frames on other websites.
Generally, the browser tells you what went wrong with the iframe… do you have more than “it doesn’t work” for us to help determine the issue?
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