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 are virus-free and free to download.
Mac users interested in Firefox version for os x 10.8.5. Generally download: Firefox 80.0 Free Firefox is one of the most popular web browsers on the market, providing numerous helpful features and quick speed to millions of users worldwide.
Firefox support has ended for Mac OS X 10.6, 10.7 and 10.8 Firefox Mac OS X 10.9, 10.10 and 10.11 users move to Extended Support Release How to download and install Firefox on Mac.
macOS
72.5 MB
14,785
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Firefox, the award-winning web browser, is now faster, more secure, and fully customizable to your online life.
Firefox empowers you to accomplish your online activities faster, more safely and efficiently than any other browser, period. Built with Tab browsing, popup blocking and a number of other seamless innovations, Firefox stands out ahead.
The wait is over. Firefox empowers you to browse faster, more safely and more efficiently than with any other browser.
What's New:
New Click-to-play blocklisting implemented to prevent vulnerable plugin versions from running without the user's permission (see blog post)
New Mac OS X 10.8: Support for Notification Center
Changed Updated Awesome Bar experience with larger icons
Developer JavaScript Maps and Sets are now iterable
Developer SVG FillPaint and StrokePaint implemented
Developer Improvements that make the Web Console, Debugger and Developer Toolbar faster and easier to use
Developer New Markup panel in the Page Inspector allows easy editing of the DOM
HTML5 Sandbox attribute for iframes implemented, enabling increased security
Fixed Over twenty performance improvements, including fixes around the New Tab page
Fixed Pointer lock doesn't work in web apps (769150)
Fixed Page scrolling on sites with Fixed headers (780345)
Known Issues
Unresolved If you try to start Firefox using a locked profile, it will crash (see 573369)
Unresolved For some users, scrolling in the main GMail window will be slower than usual (see 579260)
Unresolved Windows: The use of Microsoft's System Restore functionality shortly after updating Firefox may prevent future updates (see 730285)
Recent Mozilla Firefox Beta for Mac news
Latest Firefox could save battery life on your laptop
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