✅ Step-by-step instructions
- Check your system compatibility
Make sure your Windows version is supported. Firefox no longer supports Windows 8.1 and below for the standard release. Mozilla+2Mozilla Support+2 - Download Firefox
- Open your current browser (for example, Edge or Chrome) on your Windows PC.
- Go to the official Firefox download page: mozilla.org/firefox/windows Mozilla+1
- Click the “Download Now” button to get the installer. Mozilla Support+1
- (Optional) If you prefer an offline/full installer or a custom install, you can choose that from the “Custom installation” link in the support article. Mozilla Support+1
- Run the installer
- Once the file is downloaded, open it.
- Windows may show a “User Account Control” (UAC) prompt asking if you’ll allow the installer to make changes—click Yes. Mozilla Support+1
- The installer will automatically install Firefox into the correct folder (e.g.,
C:\Program Files\Mozilla Firefox\) by default. If you run without admin rights, it may install to your user directory. Mozilla Support - Wait for the installation to complete.
- Start Firefox and set it up
- After installation, Firefox will launch and show a “Welcome” or setup page.
- You may set Firefox as your default browser, import bookmarks from another browser, etc.
- You’re all set — Firefox is installed!
- (Optional) Install via Microsoft Store
If you’re using Windows 10 or Windows 11, you can install Firefox from the Microsoft Store:- Open Microsoft Store → Search for “Mozilla Firefox” → Click Get or Install. Mozilla Support+1
- Note: The store version and the direct download version may maintain separate browser profiles. Mozilla Support
🛡️ Tips & things to keep in mind
- Always download from the official Mozilla website to avoid fake installers.
- If your Windows version is very old (e.g., Windows 7 or 8.1), Firefox may still work but with limited or ending support. Wikipedia+1
- After installation, Firefox typically updates itself automatically in the background to keep you secure. Mozilla Support+1
- If you see a warning like “This installer may harm your device”, don’t worry if you’re on the official site—it’s a generic Windows SmartScreen alert. Mozilla Supp
