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I want to open in 32-bit mode

New Contributor

I want to open in 32-bit mode

to watch movies in Firefox, I need tobe in 32-bit mode. How do I get there from here?

Legendary Contributor

Re: I want to open in 32-bit mode

I don't think Firefox for Mac has a 64-bit mode. The error message could indicate some other incompatibility... do you want to mention the particular web site?


Have you considered installing a later version of Firefox? 3.5.2 is almost two years old now and has some security vulnerabilities.

If you prefer the last 3.5.x, see:

For the last 3.6.x, see:

Site Moderator

Re: I want to open in 32-bit mode

On a Mac, Firefox 4 is a 64 bit application.
Not all plugins support 64 bit and if not then you need to start Firefox in 32 bit mode to use that plugin.

  1. Close Firefox
  2. Open the Applications folder in Finder
  3. Right click or control-click the icon
  4. Select "Get Info"
  5. Select or Deselect "Open in 32-bit mode"
  6. Close the "Firefox Info" window
  7. Restart Firefox