Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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 Not Responding when launching application

  • 3 பதிலளிப்புகள்
  • 8 இந்த பிரச்னைகள் உள்ளது
  • 12 views
  • Last reply by jscher2000 - Support Volunteer

Starting last week, when I launch Firefox it immediately goes into a Not Responding state. I believe it occurred immediately after it auto upgraded to 25.0.1. I've attempted all of the following:

- Reinstallation of Firefox 25.0.1 - After the reinstallation Firefox launches, closes and launches without a problem. After a restart, the problem returns.

- Installed version 24 (I don't know what version I had last) - Again, after installation everything is fine, and upon rebooting, the problem returns. I ensured that the auto-update was disabled, so it remained at version 24.

- Launched Profile Manager to create a new profile. When starting with this profile, the issue still exists.

- Launched Firefox in safe mode - The problem still exists, but at first everything seems fine, however if I open anotehr tab or pull up the Add-ons the application goes into a not responding status.

- It doesn't report any error messages, but I've only checked the Event Viewer.

I'm running Windows 7 x64 bit

This issue has essentially turned Mozilla as useless.

Starting last week, when I launch Firefox it immediately goes into a Not Responding state. I believe it occurred immediately after it auto upgraded to 25.0.1. I've attempted all of the following: - Reinstallation of Firefox 25.0.1 - After the reinstallation Firefox launches, closes and launches without a problem. After a restart, the problem returns. - Installed version 24 (I don't know what version I had last) - Again, after installation everything is fine, and upon rebooting, the problem returns. I ensured that the auto-update was disabled, so it remained at version 24. - Launched Profile Manager to create a new profile. When starting with this profile, the issue still exists. - Launched Firefox in safe mode - The problem still exists, but at first everything seems fine, however if I open anotehr tab or pull up the Add-ons the application goes into a not responding status. - It doesn't report any error messages, but I've only checked the Event Viewer. I'm running Windows 7 x64 bit This issue has essentially turned Mozilla as useless.

All Replies (3)

Hi Wenin,
Sorry you are having problems.

From what you say I am not sure the problem is the update. You could try the Firefox reset, but you have already tried a more advanced option by creating a new profile & also tried Safe Mode.

Try Windows safe mode to try to rule out OS and other software and if that fails then try a clean reinstall of Firefox (deleting the program files - not the profile).

It could have been messed up sessionstore files, but as you tried a new profile that is not so likely.

I conducted the clean installation, and that didn't resolve the problem.

I deleted the "Mozilla firefox" folder from the Program Files (x64) directory. There wasn't a directory under the Program files directory.

Is there an Error log that could be recording something as to what is going on?