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Disable the "Prevent page from creating additional dialogs" checkbox


I currently run a CRM application and we have always supported it only for Firefox. With the new feature, in Firefox 4, that gives the end user the ability to stop the page from creating dialogs, it has pretty much broken the application if a user checks this feature. One issue I have run into is, when an alert is needed to inform a user that they need to do something specific before they can complete a task, it does not alert them and they think the system is bugged because it is automatically assumed as OK and they never see the info. My question boils down to, is there something in the about:config that we can set up in our corporate login files that can be disabled for this?

Modified by mfoote

Additional System Details

This happened

Every time Firefox opened

This started when...

Firefox 4 released

Installed Plug-ins

  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Adobe PDF Plug-In For Firefox and Netscape "9.4.3"
  • Google Update
  • Pando Web Plugin
  • Shockwave Flash 10.2 r153
  • iTunes Detector Plug-in
  • Next Generation Java Plug-in 1.6.0_24 for Mozilla browsers
  • 4.0.51204.0


  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0

More Information

Have a alert that has information for the user to continue, they never see the alert, so don't know what is required of them to continue.

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10741 solutions 96657 answers

You can set the pref prompts.tab_modal.enabled to false on the about:config page to get the old appearance.

To open the about:config page, type about:config in the location (address) bar and press the "Enter" key, just like you type the url of a website to open a website.
If you see a warning then you can confirm that you want to access that page.

Helpful Reply

I tried that one previously, its not the appearance that is the problem, its the check box "Prevent page from creating additional dialogs" that is the problem. I need something that completely disables/hides that. If i can find the setting for it, we can roll out a task that forces the setting on all our corporate machines.


Question owner

After working some more on this issue, I misspoke when I said it "automatically assumed as OK ", it doesn't assume anything, it just kills all dialogs. This is a small relief, at least people aren't going to be deleting records by accident because they hit the wrong button. I still would love a resolution if anyone has it.

bacalov 0 solutions 1 answers

Helpful Reply

Finally... found a useful post or at least for me worked. http://forums.mozillazine.org/viewtopic.php?p=10737317#p10737317

Modified by bacalov

Dabnis 0 solutions 1 answers

I have exactly the same problem with a web app. Once users check the box all AJAX dialog disappears, system ends up being none useable. I never thought that I would say this, but now we have to notify all users that services can not be provided via FireFox. I have read the fix, but end users are, well 'end users' most even don't even know what the address bar is!! We did try and notify them of the fix result-> total chaos.

While I'm here and just to note: The very short intervals between updates is causing many problems with plugins that are used in house for development. It seems that releasing updates every few weeks does not give add developers time to keep up resulting is plugins failing etc. Once again to my disgust we as a company have now bought commercial licensees for IE web development add ons and now use IE for all in house development.

What's gone wrong FireFox?

From a very disappointment EX Firefox user.

Modified by Dabnis

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You need to reload and and bypass the cache to rest such an disable action.

  • Press and hold Shift and left-click the Reload button.
  • Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux) or "Cmd + Shift + R" (MAC)

Users can disable that feature by setting the pref dom.successive_dialog_time_limit to zero, but as a web developer there is nothing that you can do unless you would delay such a pop-up as it only happens if such subsequent alerts appear too quickly.

Modified by cor-el

greendraw 1 solutions 2 answers

i don't find "dom.successive_dialog_time_limit" property in FF9.0.1

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10741 solutions 96657 answers

If you do not have the dom.successive_dialog_time_limit pref then you need to create a new Integer pref with that name and set the value to 0.