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

Firefox does not connect to any website and crashes on exit

  • 3 replies
  • 1 has this problem
  • 13 views
  • Last reply by i-anony

more options

Firefox 96 cannot connect to any website, even in local network or to send crash reports. One of Firefox processes constantly loads 1 cpu core. On trying to close Firefox, crash happens.

Error persists even in Troubleshooting mode, with new profile and reinstalled Firefox. With older Firefox 88 I don't have this problem.

Environment: Windows 10, Firefox 96.0

Firefox 96 cannot connect to any website, even in local network or to send crash reports. One of Firefox processes constantly loads 1 cpu core. On trying to close Firefox, crash happens. Error persists even in Troubleshooting mode, with new profile and reinstalled Firefox. With older Firefox 88 I don't have this problem. Environment: Windows 10, Firefox 96.0

Chosen solution

Disabling http3 solved the issue

Read this answer in context 👍 0

All Replies (3)

more options

Seem to be working now

more options

Hi

I appreciate that you may have done this already, but please can you restart Firefox which should resolve this issue.

more options

Chosen Solution

Disabling http3 solved the issue