Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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.

ابحث في الدعم

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

Since updating Firefox, I keep receiving the following message in a pop-up error message window: xml.freecause.com:443, and some webpages are unable to load... I have reinstalled Firefox two more times, and it still pops up. I have no problems when I use

  • 2 (ردّان اثنان)
  • 244 have this problem
  • 11 views
  • آخر ردّ كتبه Matt N.

more options

I have a print screen of the message saved as a MS Word document.

This happened

Every time Firefox opened

== I updated Firefox

I have a print screen of the message saved as a MS Word document. == This happened == Every time Firefox opened == I updated Firefox

All Replies (2)

more options

Here's a screenshot as a word doc

more options

This is likely caused by an add-on. See the solution to a similar problem at https://support.mozilla.com/en-US/questions/879028#answer-250890