Warning: Firefox now includes downgrade protection to prevent corruption of user profile data. If you install an older version, you'll be prompted to create a new Firefox profile.
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If there is a problem with a Firefox, most people will try to revert Firefox back to the way it was before and downgrade it, but we do not recommend this action. Downgrading Firefox leaves a user more vulnerable to attacks and, on most occasions, doesn't fix the problem that occurred while updating. This article gives you some alternatives to downgrading and links to old versions of Firefox, if you do choose to downgrade.
Release Notes (First offered to release channel users on April 24, 2012). Check out what s new and known issues for this version of Firefox below. As always, you re encouraged to tell us what you think, or file a bug in Bugzilla. If interested, please see the complete list of changes in this release. While the developer is fixing the problem, try using an older version. If you need the previous version of Firefox, check out the app's version history which includes all versions available to download. Download prior versions of Firefox for Mac. All previous versions of Firefox. Firefox 12 For Windows, Mac And Linux Now Available – Download Now! By Ben Reid April 23rd, 2012 With Mozilla opting to release new versions of its popular browser at light speed these days, it’s not surprising to see version 12 being released today – just 5 weeks after Firefox 11 dropped for Windows, Mac and Linux.
- Firefox Mac OS X 10.9, 10.10 and 10.11 users move to Extended Support Release; Installing Firefox on Mac. Visit the Firefox download page in any browser (for example, Safari). It will automatically detect the platform and language on your computer and recommend the best version of Firefox for you.
- With Firefox, you decide what to share online and when, because your life is your business. We designed Firefox with smart browsing features that let you take your privacy, passwords, and bookmarks with you safely wherever you go. PRIVACY CONTROL IN ALL THE RIGHT PLACES Firefox gives you greater privacy protection while you’re on the web.
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Problems with an update are generally not caused by the new version of Firefox, but rather the update process. Installing a previous version will not help in most cases. Instead, see:
Note: Other problems can be solved with the Refresh Firefox feature. It restores Firefox to its default state while saving your essential information.
Ensure all security and security related software is fully updated. Some security software will need to be upgraded to a new version for each Firefox version update.
Optional software bundled with security software may also need updating. Such software may not be essential for your security, but if outdated, it may interfere with the use of Firefox, or cause Firefox to crash.
If you want to downgrade, you can visit Mozilla's directory of older Firefox versions using the link below. Please note, however, that using older versions of Firefox can be harmful and that we recommend you use the newest version of Firefox. Warning: Old Firefox versions pose a significant security risk.
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![Firefox 12 For Mac Firefox 12 For Mac](/uploads/1/0/5/6/105666573/464253750.jpg)
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![Firefox Firefox](/uploads/1/0/5/6/105666573/866874368.png)
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Important: By default, Firefox is set for automatic updates. To prevent Firefox from automatically updating itself after you install an older version, you'll need to change your Firefox update settings: Click the menu button and select .. In the General panel, go to the Firefox Updates section.
Instead of downgrading to an older, insecure version of Firefox and changing your update settings, you should consider these alternatives:
Install Firefox Extended Support Release.Firefox Extended Support Release (ESR) is an official version of Firefox developed for large organizations like universities and businesses. Firefox ESR does not come with the latest features but it has the latest security and stability fixes. For more information, see the article Switch to Firefox Extended Support Release (ESR) for personal use.
Use the latest version of another browser. If the current Firefox version is not to your liking or just not working right now, there are alternative browsers that you can use to browse the web.
If the latest version of Firefox is causing problems for you or you just don't like something about it, please give us feedback about it here:
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