firefox for windows 10 64 bit old versions

(Source: How to tell if Firefox is 32-bit or 64-bit) Task Manager

If you have something other than the US English version, the letters after the x86 or 圆4 will be different.

64-bit Firefox is listed as Mozilla Firefox 43.0 (圆4 en-US).

32-bit Firefox is listed as Mozilla Firefox 43.0 (x86 en-US).

The software name is listed (the version number, 43.0 in this example, may be different):

32-bit Firefox running on 32-bit Windows will not include the Win64 圆4 in the user agent.Īnother place you can differentiate them is the Control Panel | Programs and Features | Uninstall a program.

64-bit Firefox running on 64-bit Windows (8.1, can't verify 10), shows Win64 圆4.

32-bit Firefox running on 64-bit Windows (8.1, can't verify 10), shows WOW64 in the User Agent.

64-bit from the User Agent entry in that section: So if the version numbers on your computer are the same, you can determine 32-bit vs. Now that the 64-bit version has been officially released, it carries the same version number as the 32-bit version. The Application Basics section at the top will show you the version you're running. If you have the menu display turned on, this is also accessible under Help | Troubleshooting Information. In Firefox, type about:support in the the URL window.

Firefox for windows 10 64 bit old versions