Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

When I remove the Exceptions on the second Permissions list (Warn you...install add-ons) and Save the Changes, why do they return on restarting Firefox?

  • 4 fhreagra
  • 1 leis an bhfadhb seo
  • 2 views
  • Freagra is déanaí ó Bugman9

more options

When I select Preferences, Privacy & Security, go to the Permissions section there is a list of Exceptions to Warn you when websites try to install add-ons. I click on Exceptions and remove the 2 default websites and Save changes. The list of Exceptions is then empty. But when I quit Firefox and restart it, the 2 websites come back. I do not want any exceptions. How can I keep this exceptions list empty?

When I select Preferences, Privacy & Security, go to the Permissions section there is a list of Exceptions to Warn you when websites try to install add-ons. I click on Exceptions and remove the 2 default websites and Save changes. The list of Exceptions is then empty. But when I quit Firefox and restart it, the 2 websites come back. I do not want any exceptions. How can I keep this exceptions list empty?

Réiteach roghnaithe

Hi  !

That must be annoying.

Would you please take a look at this article :

How to fix preferences that won't save

Any good  ?

Read this answer in context 👍 3

All Replies (4)

more options

Réiteach Roghnaithe

Hi  !

That must be annoying.

Would you please take a look at this article :

How to fix preferences that won't save

Any good  ?

more options

Yes, thank you! I think the Reset did it.

more options

Keep in mind that Firefox adds some default exceptions.

Otherwise you wouldn't be able to install extensions without seeing a warning.

Those will likely be there in a new profile. There used to be special xpinstall.whitelist.add prefs to create these exceptions, but apparently Firefox uses a different method to add these default exceptions.

Athraithe ag cor-el ar

more options

cor-el: I understand why Firefox would want to do this, but I want to be able to approve or reject every change made to the browser. Also, I want to know if a change to my browser was made by an evil website or by Mozilla/Firefox. I update my software every week and that is when Firefox can change the browser.

I have gotten 2 applications added to my browser and I have no idea which website did it, so I am a little wary of changes made without my knowledge.