Internet Explorer, if you choose, announces script errors relentlessly. This may help Web and application developers, but it’s just plain annoying for the rest of us.
If you’re getting these messages, click Tools>>Internet Options. Select the Advanced tab. Under Browsing, select “Disable script debugging.” Clear “Display a notification about every script error.”

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I have checked the “Disable script debugging” and cleared “Display a notification about every script error.” The pop-up still keeps coming up.