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Firefox 3.6.28 is the last version of the old Firefox and won't be updated with security and stability fixes. In order to keep your computer and personal information safe, we recommend that you install the latest Firefox if possible. This article goes over your upgrade options.

{for win,mac} Firefox 3.6.28 is the last version of the old Firefox and won't be updated with security and stability fixes. In order to keep your computer and personal information safe, we recommend that you install the latest Firefox if possible. This article goes over your upgrade options. __TOC__ {/for} {for win} =Get the latest Firefox= If you have Windows XP Service Pack 2 or 3, Windows Vista or Windows 7, you should install the latest Firefox from mozilla.org as soon as possible. For details, see: *[[Installing Firefox on Windows]] The latest Firefox has many new features and looks a bit different from Firefox 3.6. After you upgrade, these articles will help you get comfortable with the changes: *[[Common questions after upgrading from Firefox 3.6]] *[[Getting started with Firefox]] {warning}'''Warning:''' Continuing to use Firefox 3.6 is no longer supported and poses a significant security risk.{/warning} =Options for older versions of Windows= Firefox 12 is the last version of Firefox that will work with Windows 2000, the original version of Windows XP or Windows XP Service Pack 1. If you use these versions of Windows you will have to update Windows in addition to Firefox in order to keep receiving security and stability fixes. For details and what to do if you can't upgrade, see: *[[Firefox no longer works with some versions of Windows XP]] *[[Firefox no longer works with Windows 2000]] {/for} {for mac} =Get the latest Firefox= If your Mac has an Intel processor and Mac OS X 10.5, 10.6 or 10.7, you should install the latest Firefox from mozilla.org as soon as possible. For details, see: *[[Installing Firefox on Mac]] The latest Firefox has many new features and looks a bit different from Firefox 3.6. After you upgrade, these articles will help you get comfortable with the changes: *[[Common questions after upgrading from Firefox 3.6]] *[[Getting started with Firefox]] {warning}'''Warning:''' Continuing to use Firefox 3.6 is no longer supported and poses a significant security risk.{/warning} =Options for Mac OS 10.4 or PowerPC processors= New versions of Firefox do not work with Mac OS X 10.4 or with PowerPC processors. You will have to upgrade Mac OS in addition to Firefox in order to keep receiving security and stability fixes. For details and what to do if you can't upgrade, see: *[[Firefox no longer works with Mac OS X 10.4 or PowerPC processors]] {/for} {for linux} Firefox 3.6.28 is the last version of the old Firefox and won't be updated with security and stability fixes. In order to keep your computer and personal information safe, we recommend that you install the latest Firefox. =Get the latest Firefox= *See [[Updating Firefox]] for instructions. *If you are unable to update, please see [[Installing Firefox on Linux]]. The latest Firefox has many new features and looks a bit different from Firefox 3.6. After you upgrade, these articles will help you get comfortable with the changes: *[[Common questions after upgrading from Firefox 3.6]] *[[Getting started with Firefox]] {warning}'''Warning:''' Continuing to use Firefox 3.6 is no longer supported and poses a significant security risk.{/warning} {/for}