This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

With Firefox as my default browser for a desktop iMac, a note appears "An attempt to change your home page and default search has been blocked" It won't go away

  • 2 replies
  • 1 has this problem
  • 7 views
  • Last reply by FredMcD

more options

With Firefox as my default browser for a desktop iMac, a note appears "An attempt to change your home page and default search has been blocked" It won't go away. It tells me to click on the checkmark to change settings but that doesn't work and the red x in the upper right hand corner doesn't remove the note which is in the upper left corner of my iMac ??? The only thing that removes the note is quitting Firefox but it reappear as soon as I start Firefox back up ???

With Firefox as my default browser for a desktop iMac, a note appears "An attempt to change your home page and default search has been blocked" It won't go away. It tells me to click on the checkmark to change settings but that doesn't work and the red x in the upper right hand corner doesn't remove the note which is in the upper left corner of my iMac ??? The only thing that removes the note is quitting Firefox but it reappear as soon as I start Firefox back up ???

All Replies (2)

more options

hello, please try to refresh firefox and see if this can address the issue...

more options

If that does not work, Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac Options)
key, and then starting Firefox. Is the problem still there?


Start your Computer in safe mode with networking. Then start Firefox. Try Safe web sites.

Starting The Computer In Safe Mode;
Free Online Encyclopedia