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.

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.

Why does Firefox 4.0.1 access the internet when I open it on an html file on my own computer? What is it doing behind my back ???

  • 1 reply
  • 2 have this problem
  • 1 view
  • Last reply by TonyE

dkpurnell
dkpurnell
more options

If I am not connected to the internet, Firefox 4.0.1 opens the file as expected. But if i am connected, Firefox 4.0.1 not only opens the file, but also generates mysterious internet traffic. What is going on? All plugins are disabled.

Earlier versions of Firefox (before 4) did not generate unexpected internet traffic.

If I am not connected to the internet, Firefox 4.0.1 opens the file as expected. But if i am connected, Firefox 4.0.1 not only opens the file, but also generates mysterious internet traffic. What is going on? All plugins are disabled. Earlier versions of Firefox (before 4) did not generate unexpected internet traffic.

All Replies (1)

TonyE
TonyE
  • Moderator
more options

All versions of Firefox by default will try to connect to the internet, for details see https://support.mozilla.com/kb/Firefox+makes+unrequested+connections