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.

Where do I get Firefox 3.6? I can't use Firefox 4.

  • 2 replies
  • 10 have this problem
  • 3 views
  • Last reply by TorontoBob

TorontoBob
TorontoBob
more options

Firefox 4 does not work with Kaspersky anti-virus program. I had to uninstall Firefox. Now I need to re-install Firefox 3.6. Where do I find Firefox 3.6? Mozilla websites only provide Firefox 4. Now using Internet Explorer.

Thanks muchly!

TorontoBob

Firefox 4 does not work with Kaspersky anti-virus program. I had to uninstall Firefox. Now I need to re-install Firefox 3.6. Where do I find Firefox 3.6? Mozilla websites only provide Firefox 4. Now using Internet Explorer. Thanks muchly! TorontoBob

All Replies (2)

TonyE
TonyE
  • Moderator
more options

You can install Firefox 3.6.* available from http://www.mozilla.com/en-US/firefox/all-older.html

To avoid possible problems with downgrading, I recommend going to your profile folder and deleting the following files if they exist - extensions.cache, extensions.rdf, extensions.ini, extensions.sqlite and localstore.rdf. Deleting these files will force Firefox to rebuild the list of installed extensions, checking their compatibility, and reset toolbar customizations.

For details of how to find your profile folder see https://support.mozilla.com/kb/Profiles

You should contact Kaspersky about their plans to support Firefox 4. the main application should work just fine with Fireofx 4, it will be any add-ons that may not be working.

TorontoBob
TorontoBob Question owner
more options

Thanks Tony. I will try!