If you clicked the checkbox on the “Prevent this page from creating additional dialogs” here is how to re-enable additional dialogs.
You might have clicked the checkbox and then found out that some piece of software or a web page needed additional dialogs in order to function properly.
Fortunately one of these two actions will re-enable additional dialogs in Chrome:
- Close the Tab and open a new Tab where you navigate back to the webpage you were on. By closing the tab you reset the additional dialogs setting back to on.
- Close Chrome and then re-open Chrome. This will re-enable Additional Dialogs.