New to Firefox?

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Common Questions

• Using the Lightning Calendar
• Move Thunderbird data to a new computer
• Vacation Response
• Reply Above or Below Quoted Text

Need More Personal Help?

If you can't find the answer you need, our community volunteers are ready to help you find a solution. Ask your question here.

Have a problem?

The main support for Firefox 4 is through our support forum. We've collected some of the top questions right here so you can get an answer quickly.

• • Status bar missing?
  • Seeing an error about Components.classes is undefined?
  • Problems with Flash on a mac?

Have a different question?

Check out our support forum to see all questions asked about the Firefox 4, ask your question or help out your fellow Firefox 4 users.