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

The default browser is set to 5.0. I want it to open 4.0.

  • 4 پاسخ
  • 1 has this problem
  • 21 views
  • آخرین پاسخ توسّط cor-el

more options

I just installed the Firefox 5.0 update. I currently have 3.6, 4.0 and 5.0 installed on my Mac Book Pro for development purposes. Many plug-ins I use for development don't work in 5.0 currently so I want to use 4.0 instead. How can I make my default browser 4.0?

Currently, 5.0 keeps automatically opening when I click on a link from an external source/RSS reader.

I just installed the Firefox 5.0 update. I currently have 3.6, 4.0 and 5.0 installed on my Mac Book Pro for development purposes. Many plug-ins I use for development don't work in 5.0 currently so I want to use 4.0 instead. How can I make my default browser 4.0? Currently, 5.0 keeps automatically opening when I click on a link from an external source/RSS reader.

All Replies (4)

more options

I am not a Mac user, but have multiple versions and profiles of Firefox. I note you ask about Macs, but have system details showing as Windows 7.

I can only speak from a PC perspective, but no doubt you can sort it out yourself. It is down to the OS which browser is the default, although firefox has the option to check and reset that at startup.

No doubt if I delved into the registry I could find how it sets the default browser, but in practical terms what I do is allow the OS to set itself up.

  1. Choose any other alternative browser such as IE, make that the default, and allow that to take effect.
  2. Then deselect IE as default browser checking.
  3. Now start up the chosen version of Firefox, use Firefox's options to set that as default browser. (Options -> advanced -> general system defaults )

It works, although some applications may choose IE regardless.

With luck something similar may work on a Mac

more options

Thanks! I have tried to use Chrome as my default browser then restart Firefox as you instructed to be my default browser, but it still runs 5.0.

I don't have this problem on my Windows machine.

Thanks again for your response!

more options

I imagine there is some easy way of doing it. I do not understand modern Macs, but from a mozillazine KB there is also an apparently free possibly suitable app: http://www.rubicode.com/Software/RCDefaultApp/

more options