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How do I tell if I have the 32-bit or 64-bit Firefox?
Revision 115468:
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32,64,windows
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Not sure whether you are running the 32-bit or 64-bit Firefox? This article covers how to find out.
Not sure whether you are running the 32-bit or 64-bit Firefox? This article explains how to find out.
Content:
{for not win}{warning}This article applies only to Windows.{/warning}{/for}
Starting in Firefox version 43.0, a 64-bit of the Firefox browser is available. Currently, there is neither the 32-bit or 64-bit versions are marked in the Firefox about page with their respective versions.
However, there are other ways to determine whether you have the 32-bit or 64-bit version of Firefox installed:
__TOC__
=User Agent=
The user agent is used to identify your browser and contains information about your operating system, browser and other information. This can be an easy way to identify what version of Firefox you are running.
To access your user agent, you will need to open the [[Use the Troubleshooting Information page to help fix Firefox issues|Troubleshooting Information page]]. To do so, click the menu button [[Image:New Fx Menu]], click help [[Image:Help-29]] and select {menu Troubleshooting Information}.[[Image:User Agent Fx42.0]]In the user agent section of this page, look at the information enclosed within the parenthasis. This contains your operating system number, what bit your Firefox is and what Firefox version number you are running.
If your user agent contains '''WOW64''', you are running the 32-bit version of Firefox. If your user agent contains '''Win64; x64''', you are running the 64-bit version of Firefox.
=Windows Programs Manager=
You can also check which version of Firefox you are running from the Programs and Features manager in Windows.
To open the Programs and Features manager, first open your Control Panel in Windows. Then select the Programs category or Programs and Features if you are using icons. This will load a list of software that is currently install on your system.
To determine whether your Firefox is 32-bit or 64-bit, locate the Mozilla Firefox program. In the brackets, you will find what bit Firefox you are using and your language.
[[Image:Win7 Programs]]
If your program name contains '''x86''', you are running the 32-bit version of Firefox. If you program name contains '''x64''', you are running the 64-bit version of Firefox.
[[Template:WindowsOnly]]
A 64-bit version of Firefox is available for Windows 64-bit operating systems, in addition to the 32-bit version of Firefox (see [https://blog.mozilla.org/futurereleases/2015/12/15/firefox-64-bit-for-windows-available/ this blog post] for details). This article explains how to determine whether you are running the 32-bit or 64-bit version of Firefox.
__TOC__
=User agent=
The user agent identifies your browser to websites and contains information about your operating system and browser version. This can be an easy way to identify what version of Firefox you are running.
To find your user agent, click the Firefox menu button [[Image:New Fx Menu]], click help [[Image:Help-29]] and select {menu Troubleshooting Information}. This will open the [[Use the Troubleshooting Information page to help fix Firefox issues|Troubleshooting Information page]].
[[Image:User Agent Fx42.0]]
In the '''Application Basics''' section of this page, find the '''User Agent''' entry and look at the information enclosed within the parentheses. If your user agent contains '''WOW64''', you are running the 32-bit version of Firefox. If your user agent contains '''Win64; x64''', you are running the 64-bit version of Firefox.
=Windows program listing=
You can also check which version of Firefox you are running from the Programs and Features listing in Windows.
To open the Programs and Features manager, first open your Control Panel in Windows. Then select the Programs category, or Programs and Features if you are using icons. This will load a list of software that is currently installed on your system.
To determine whether your Firefox is 32-bit or 64-bit, locate the '''Mozilla Firefox''' program. The program name will include the Firefox version and, in parentheses, the bit version and language.
<!-- [[Image:Win7Programs]] -->
If your program name contains '''x86''', you are running the 32-bit version of Firefox. If your program name contains '''x64''', you are running the 64-bit version of Firefox.