Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

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
This thread was archived. Please ask a new question if you need help.
Archived

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

Firefox
Matt N. replied
AnonymousUser
AnonymousUser

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)

AnonymousUser
AnonymousUser Question owner

Here's a screenshot as a word doc

Matt N.
Matt N.

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