Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Every time I open/launch Mozilla, it opens up 2 tabs instead of 1. How do I fix that? Thank you.

  • 6 replies
  • 7 have this problem
  • 159 views
  • Last reply by whitfiem
  • Solved

I click on the Mozilla Firefox icon from my desktop and it opens two tabs. I always have to close the second tab before I can start browsing.

I click on the Mozilla Firefox icon from my desktop and it opens two tabs. I always have to close the second tab before I can start browsing.

Chosen solution

Another user had a second tab opening and it was caused by one of his extensions.

You can check for nonessential or unrecognized extensions on the Add-ons page. Either:

  • Ctrl+Shift+a
  • orange Firefox button (or Tools menu) > Add-ons

In the left column, click Extensions. Then, if in doubt, disable.

Usually a link will appear above at least one disabled extension to restart Firefox. You can complete your work on the Add-ons page and click one of the links as the last step.

Does that get rid of the extra tab?

Read this answer in context 👍 4

All Replies (6)

Please ensure that your homepage for Firefox does not contain two URLs or is not split using a "|".

What webpages does it open upon startup?

didn't solve the problem.  :-(

Two tabs with webpages loading? If so, which two pages?

If not, is one a blank page?

Have you tried resetting your homepage?
http://support.mozilla.com/en-US/kb/How+to+set+the+home+page

Chosen Solution

Another user had a second tab opening and it was caused by one of his extensions.

You can check for nonessential or unrecognized extensions on the Add-ons page. Either:

  • Ctrl+Shift+a
  • orange Firefox button (or Tools menu) > Add-ons

In the left column, click Extensions. Then, if in doubt, disable.

Usually a link will appear above at least one disabled extension to restart Firefox. You can complete your work on the Add-ons page and click one of the links as the last step.

Does that get rid of the extra tab?

Thank you! That fixed it. I appreciate you!

It would open up my home page AND a blank page.  :-(