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.

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

need to go back to version prior to 4.0 until norton antivirus updates plug-in

more options

When I upgraded to 4.0 a message appeared to say that the Norton Security Anti-virus plug-in was not able to accessed. Norton says they won't have update till May. So I need to uninstall 4.0 and reinstall the version prior to that. My operating system is Windows 7 64 bit.

When I upgraded to 4.0 a message appeared to say that the Norton Security Anti-virus plug-in was not able to accessed. Norton says they won't have update till May. So I need to uninstall 4.0 and reinstall the version prior to that. My operating system is Windows 7 64 bit.

All Replies (1)

more options