This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Remove (Build....followed by numbers) in my Browser Bar

  • 2 replies
  • 1 has this problem
  • 4 views
  • Last reply by cor-el

more options

I recently noticed that when I open a Firefox Browser, at the top, where it says "Mozilla Firefox" it is followed by this: (Build 2097109189239018)

Those are not the actual numbers, but that is what it looks like - Parenthesis with the word "Build" followed by a series of numbers and then the end parenthesis.

I would like to get rid of this please. I don't want to see it.

What is it first of all? Why is it suddenly appearing in my browser bar? And HOW can I get rid of it once and for all?

Thank you!

I recently noticed that when I open a Firefox Browser, at the top, where it says "Mozilla Firefox" it is followed by this: (Build 2097109189239018) Those are not the actual numbers, but that is what it looks like - Parenthesis with the word "Build" followed by a series of numbers and then the end parenthesis. I would like to get rid of this please. I don't want to see it. What is it first of all? Why is it suddenly appearing in my browser bar? And HOW can I get rid of it once and for all? Thank you!

All Replies (2)

more options

Sounds like the Nightly Tester Tools add-on.

https://wiki.mozilla.org/Auto-tools/Automation_Development/Projects/Addons/NightlyTesterTools

Change the prefs for Customize Titlebar in Firefox app button > Nightly Tester Tools - > Customize Titlebar

more options

Please Update to the latest Firefox 17.0.x version.

  • Help > About Firefox

The Firefox Firefox 12.0 version that you currently run is no longer supported with security updates