How do I enable Javascript?

[Göran1]

When starting Acrobat, I suddenly get a dialog box saying Javascript is inactivated. I have not changed any settings. Since this box is system global/modal, it blocks the underlying Acrobat window, so I can't access its settings.  Is there a simple solution (supposedly one can adjust the setting through the registry, but how do I do that without damaging anything).  And why did this box suddenly appear?  My Acrobat Reader doesn't display it.

[try67]

Having JavaScript disabled should not prevent you from using the application in general, nor should it cause such a message to appear when you open it. Can you post a screenshot of what you're seeing? Also, what exact version of Reader are you using, and what's your OS version?

[Göran1]

It isn't that exciting. See shot.  Nothing happens whatever email address I enter.  If I close the dialog box, Acrobat exits.

Windows 10, v. 1809 (OS version 17763.1282.

Acrobat DC version 20.

[try67]

You need to activate JS in your browser.

[Brenda5FBE]

Javascript is enabled in my browsers.  Still the same problem.

[Test Screen Name]

Ok, the message is CERTAINLY not about Acrobat's JavaScript. This particular box is made using web browser technology, so it's a message about JavaScript not working with whatever browser technology is being used. I've seen a few cases of this. I see reports that it will use Microsoft's browser in all cases, and I observe you have at least 3 different browsers. Try following these instructions: https://support.microsoft.com/en-us/topic/how-to-enable-javascript-in-windows-88d27b37-6484-7fc0-17d...