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!

搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

了解更多

I updated Firefox to 15.0.1, so, why is it not opening?

  • 5 回覆
  • 4 有這個問題
  • 2 次檢視
  • 最近回覆由 cor-el

more options

My brother and I just updated his Windows XP computer to Mozilla Firefox Version 15.0.1. After installing the update, my brother clicked on the browser, and received the message, "Firefox is already running, bot is not responding. To open a new window, you must first close the existing Firefox process, or restart your computer. Since the browser was already closed, we restarted his computer. Once booted up, he went and click the browser again, and still received the same message. So, I assumed there might have been an error in installing the update, so I uninstalled it, and reinstalled the program, and still he gets the same message. I have already browsed through the pages of the support forums, and I cannot find another person who is having the same problem. Though it is a Windows XP Operating System, is it up to date as far this older version of WIndows goes.

My brother and I just updated his Windows XP computer to Mozilla Firefox Version 15.0.1. After installing the update, my brother clicked on the browser, and received the message, "Firefox is already running, bot is not responding. To open a new window, you must first close the existing Firefox process, or restart your computer. Since the browser was already closed, we restarted his computer. Once booted up, he went and click the browser again, and still received the same message. So, I assumed there might have been an error in installing the update, so I uninstalled it, and reinstalled the program, and still he gets the same message. I have already browsed through the pages of the support forums, and I cannot find another person who is having the same problem. Though it is a Windows XP Operating System, is it up to date as far this older version of WIndows goes.

所有回覆 (5)

more options
more options

I tried all the links that you have provided to me, and none of the solutions worked. I am still getting the same message of the browser running but not responding.

more options
more options

No, that did not work either.

more options

Deleting the profiles.ini file should force Firefox to create a new profile.

Can you start the Profile Manager to create a new profile?


Do a clean reinstall and delete the Firefox program folder before reinstalling a fresh copy of Firefox.

Download a fresh Firefox copy and save the file to the desktop.

Uninstall your current Firefox version, if possible, to cleanup the Windows registry and settings in security software.

  • Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you will also lose your personal data like bookmarks and passwords from profiles of other Firefox versions.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

Your bookmarks and other profile data are stored in the Firefox Profile Folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.

If you keep having problems then also create a new profile.