We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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.

Mozilla Support में खोजें

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 need to access a website that does not support any versions of Firefox beyond 3.x, how can I downgrade my webbrowser so I can access that site?

  • 1 प्रत्युत्तर दें
  • 1 यह समस्या है
  • 2 views
  • के द्वारा अंतिम प्रतियुतर cor-el

more options

I recently upgraded to Mozilla Firefox 4.0.1 and now I cannot access web applications (Momentum from CGI Federal) that are only compatible with version 3.x. Is there a way to downgrade my version or run two different versions on one computer? If I can't downgrade I will need to run IE as my primary web browser.

I recently upgraded to Mozilla Firefox 4.0.1 and now I cannot access web applications (Momentum from CGI Federal) that are only compatible with version 3.x. Is there a way to downgrade my version or run two different versions on one computer? If I can't downgrade I will need to run IE as my primary web browser.

All Replies (1)

more options

You can use the portable Firefox version for such sites.

See http://portableapps.com/apps/internet/browsers/portable_firefox