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Firefox Not Loading? How to Fix Firefox Browser

Updated March 2026 · Covers Windows, Mac, Linux, Android, iOS

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1. Quick Fixes to Try First

Before advanced troubleshooting

  1. Restart Firefox — close completely and reopen
  2. Restart your computer — clears memory and resets processes
  3. Update Firefox — Menu → Help → About Firefox
  4. Check your internet — try loading sites in another browser
Tip: If Firefox works in Safe Mode, the issue is caused by an add-on or custom setting.

2. Firefox Safe Mode