Firefox - How to get the `disable 3rd party add-on` dialog box again?

Question

Is it possible to trigger the 'disable 3rd part add-on' dialog box again in Firefox? When I upgraded to Firefox 8 Beta it did not offer me the dialog. It could be that earlier, when I tried Aurora, I got the dialog once and so its not offering me again. If so, how can I re-enable it?

Answer 1

Note: Some settings may require a browser restart to take effect.

First of all, make sure that you have Warn me when sites try to install add-ons enabled under Options > Security.

You can also add the website to the whitelist without being prompted by clicking Exceptions....

Also, if you have a xpinstall.enabled preference in about:config and it is set to false, set it to true or delete the preference.

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Alternatively, hardware acceleration may be causing the warning's GUI to fail. Try disabling Use hardware acceleration when available under Options > Advanced > General > Browsing.

• More information: Troubleshooting Hardware Acceleration | Firefox Help