Download Firefox 3.6 For Windows
Firefox 3.6 Download Free

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.

Firefox Developer Edition. Get the Firefox browser built just for developers. Check out the home for web developer resources. Firefox Reality. Explore the web with the Firefox browser for virtual reality. Donate your voice so the future of. Firefox 3.6.13 for Windows. Firefox is a lean Web browser that clocks in at about 8MB. If you are concerned about security holes in Internet Explorer, then Firefox is worth a look. From version 3.6, Firefox supports HTML 5 features such as HTML 5 video and audio, SVG graphics and WOFF (Web Open Font Format), plus it has full support for Windows 7. Mozilla Firefox. Mozilla Firefox browser is a fast, full-featured Web browser. Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, and much more. Last update 28 Sep. 2011 old versions Licence Free OS Support Windows Ranking #1 in Web browsers.

If there is a problem with a new version of Firefox, some people may want to downgrade Firefox to a previous version but we do not recommend this. The latest Firefox version includes security updates so downgrading to an older version leaves you more vulnerable to attacks and usually doesn't fix the problem. This article gives you some alternatives to downgrading and links to older versions of Firefox if you do choose to downgrade.

Problems with an update are usually not caused by the new version of Firefox, but rather the update process. In most cases, installing a previous version will not help. 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 so that it is compatible with each Firefox version update.

Optional software bundled with security software also may need updating. Such software may not be essential for your security but, if outdated, may interfere with the use of Firefox or cause Firefox to crash.

If you still want to downgrade, you can visit Mozilla's directory of older Firefox versions using the links below. Please note, however, that using older versions can make Firefox insecure and more vulnerable to attacks and scams. We recommend that you always use the newest version of Firefox.

Warning: Older Firefox versions pose a significant security risk.

Firefox 77.0.132-bit (US English)
Firefox 77.0.164-bit (US English)

Firefox 77.0.132-bit (US English)
Firefox 77.0.164-bit (US English)

Firefox 78.0.232-bit (US English)
Firefox 78.0.264-bit (US English)

Firefox 78.0.232-bit (US English)
Firefox 78.0.264-bit (US English)

Firefox 79.032-bit (US English)
Firefox 79.064-bit (US English)

Firefox 79.032-bit (US English)
Firefox 79.064-bit (US English)

Firefox 80.0.132-bit (US English)
Firefox 80.0.164-bit (US English)

Firefox 80.0.132-bit (US English)
Firefox 80.0.164-bit (US English)

Firefox 81.0.232-bit (US English)
Firefox 81.0.264-bit (US English)

Firefox 81.0.232-bit (US English)
Firefox 81.0.264-bit (US English)

Firefox 82.0.332-bit (US English)
Firefox 82.0.364-bit (US English)

Firefox 82.0.332-bit (US English)
Firefox 82.0.364-bit (US English)

Firefox 83.032-bit (US English)
Firefox 83.064-bit (US English)

Firefox 83.032-bit (US English)
Firefox 83.064-bit (US English)

Firefox 84.0.232-bit (US English)
Firefox 84.0.264-bit (US English)

Firefox 84.0.232-bit (US English)
Firefox 84.0.264-bit (US English)

Firefox 85.0.232-bit (US English)
Firefox 85.0.264-bit (US English)

Firefox 85.0.232-bit (US English)
Firefox 85.0.264-bit (US English)

Firefox 86.0.132-bit (US English)
Firefox 86.0.164-bit (US English)

Firefox 86.0.132-bit (US English)
Firefox 86.0.164-bit (US English)

Firefox 87.032-bit (US English)
Firefox 87.064-bit (US English)

Firefox 87.032-bit (US English)
Firefox 87.064-bit (US English)

Firefox 88.0.132-bit (US English)
Firefox 88.0.164-bit (US English)

Firefox 88.0.132-bit (US English)
Firefox 88.0.164-bit (US English)

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:

In the Menu bar at the top of the screen, click Firefox and select Preferences.Click the menu button and select .Click the menu button and select .

In the General panel, go to the Firefox Updates section.

Download Firefox 3.6 For Windows

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 such as universities and businesses. Firefox ESR does not come with the latest features, but it does have the latest security and stability fixes. For more information, see the article Switch to Firefox Extended Support Release (ESR) for personal use.

Firefox 3.6 Download Free

Use the latest version of another browser. If you are not satisfied with the current Firefox version or it simply is not working right now, there are alternative browsers that you can use to browse the web.

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Download Firefox 3.6 For Windows

Firefox 3.6 Download Free

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