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What to do if you spot fake notices claiming to contain an “urgent” or “critical” Firefox update. The custom setup option in the Firefox full, offline installer lets you choose the program folder location and shortcuts. Learn how to find out what Firefox version you are using, to help troubleshoot a problem or just to know if Firefox is up to date. Firefox is safe to install, so choose “install anyway”. Windows 10 may interrupt your Firefox install with a “Microsoft-verified apps” warning. Learn how to update Firefox on Windows, Mac, or Linux.

Firefox support for Windows 7, 8 and 8.1

Firefox updates automatically in most cases, but you can manually check for and install updates if needed. Portions of this content are ©1998–2026 by individual mozilla.org contributors. Firefox and Thunderbird install Mozilla Maintenance Service to allow seamless background updates.

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Stuck with the “Can not create temp folder archive” 1xbet ios error on 7-Zip when installing Firefox for Windows 10? Firefox desktop should be installed on systems meeting minimum requirements for best performance. Fix the “installation incomplete/corrupt” error in Firefox on Windows by addressing common causes like corrupted files or hardware issues.

When installing Firefox on Windows 10, you may see a warning that says you can “only install apps from the Microsoft Store.” This is a Windows… If you need more help, you can always get community support. To learn more, see Download Firefox on Windows from the Microsoft Store. Congratulations, you are done installing Firefox! This article explains how to install Firefox on Windows, either with a simple online installer from Mozilla or from the Microsoft Store. Post a question to our support forums and get answers from our community of experts.

• This page explains how to install Firefox on Chromebooks and other devices running ChromeOS.
• Firefox updates automatically in most cases, but you can manually check for and install updates if needed.
• Congratulations, you are done installing Firefox!
• Downgrading to a previous Firefox version doesn’t solve most problems.
• When installing Firefox on Windows 10, you may see a warning that says you can “only install apps from the Microsoft Store.” This is a Windows…

对 Firefox 更新和辅助工具进行故障排除

You may see a warning that the installer could harm your device when attempting to download Firefox from another browser. Learn about update notifications on Windows that let you know when a brand-new Firefox version is available, even if Firefox is closed. Firefox 78 was the last supported version for Mac OS X 10.9, 10.10 and 10.11.

Answer questions and improve our knowledge base. Grow and share your expertise with others. REDIRECT How to install Firefox on Windows Windows 10 reached EOS (end of support) on October 14, 2025.

A root certificate that expired March 14, 2025 can cause issues with add-ons, DRM media and essential features, unless you update Firefox. You cannot install Firefox from Mozilla or from the Microsoft Store on Windows in S mode. This article links to older versions and provides some alternatives. Downgrading to a previous Firefox version doesn’t solve most problems. Learn what to do if you get a “Firefox is trying to install a new helper tool” message while updating Firefox on macOS. This page explains how to install Firefox on Chromebooks and other devices running ChromeOS.