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

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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.

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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

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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!

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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/

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