Windows 10 will reach EOS (end of support) on October 14, 2025. For more information, 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

Firefox keeps shutting down

  • 2 replies
  • 0 have this problem
  • 4 views
  • Last reply by cor-el

more options

Why is Firefox shutting down right after I activate it, or when I am on a website. This does this randomly not every time.

Why is Firefox shutting down right after I activate it, or when I am on a website. This does this randomly not every time.

All Replies (2)

more options

Does it still happen with hardware acceleration disabled?

more options

I notice that you have a user agent with extras appended: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/119.0 GLS/94.10.5189.90 Where did you download Firefox from?


Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or if userChrome.css/userContent.css is causing the problem.

  • switch to the Default System theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window