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Need to undo "Prevent Site from Creating Anymore Dialogs"

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Without thinking, I checked the box. Now I can't find a way to undo it. I need the confirm dialog to appear!

I tried following [guide] this guide by pressing Ctrl + F5 but it didn't work.

Please advise, thanks!

Without thinking, I checked the box. Now I can't find a way to undo it. I need the confirm dialog to appear! I tried following [[https://support.mozilla.org/en-US/questions/845020|this guide]] this guide by pressing Ctrl + F5 but it didn't work. Please advise, thanks!

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You could try removing cookies for the site. If that doesn't work, right-click the site in History and select Forget About This Site.

https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox#w_remove-a-single-website-from-your-history

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Closing and restarting Firefox should be sufficient to recover.