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

I want to update Firefox 3.6.17 to 4. Do I have to delete the older version from my computer first?

  • 4 replies
  • 33 have this problem
  • 7 views
  • Paskiausią atsakymą parašė TonyE

more options

How do you know when to just click and download a Firefox update, as opposed to having to remove the earlier version from your system prior to downloading the new version?

How do you know when to just click and download a Firefox update, as opposed to having to remove the earlier version from your system prior to downloading the new version?

All Replies (4)

more options

There is no need to delete the old version, you can download Firefox 4 from http://www.mozilla.com/ and install it over your current version.

more options

Thanks TonyE, Appreciate the reply and will do. How do I know for future updates when to simply download or remove older version first? Have had this problem with other programs, and have never understood clearly the principle(s) involved. Malz.

more options

YES, you can, BUT.......should we?? With all of the BIG TROUBLES that MANY MANY PEOPLE are having with ver.4, MAYBE we should wait till the STORM PASSES!!!! And if YOU are one of those that are having trouble and want to get back to 3.6.16.....

.....here is the link to it: ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/3.6.16/win32/en-US/Firefox%20Setup%203.6.16.exe

OH, and WHY don't I list 3.6.17 that just came out.....well.....because that one is also having some "issues", THAT'S WHY!!!!

more options

krklek, there have been over 100 million downloads of Firefox 4, of those only a very small percentage have posted here with questions.

Many of the posts here are questions about changes in the new version or issues due to incompatible or problematic add-ons rather than problems with Firefox 4 itself.