為了改善您的使用體驗，本網站正在進行維護，部分功能暫時無法使用。若本站的文件無法解決您的問題，想要向社群發問的話，請到 Twitter 上的 @FirefoxSupport 或 Reddit 上的 /r/firefox 發問，我們的社群成員將很快會回覆您的疑問。

Avatar for Username

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

此討論串已被封存。 如果您有需要幫助，請新增一個新問題

Firefox will not start because "A copy of Firefox is already open. Only one copy of Firefox can be open at a time".

  • 1 回覆
  • 1 有這個問題
  • 8 次檢視
  • 最近回覆由 cor-el

dknodel2106
dknodel2106
more options

I had a major crash of Firefox - maybe virus or malware. I think computer is clean now. I deleted all Mozilla/Firefox files I could find and re-install Firefox. Will not run in safe mode (same error). Since I deleted Firefox/Mozilla files, I can not supply crash information/logs :( It runs fine on another computer on my network, this MacBookPro, same OSX and version of Firefox.

Profile Manager?

I had a major crash of Firefox - maybe virus or malware. I think computer is clean now. I deleted all Mozilla/Firefox files I could find and re-install Firefox. Will not run in safe mode (same error). Since I deleted Firefox/Mozilla files, I can not supply crash information/logs :( It runs fine on another computer on my network, this MacBookPro, same OSX and version of Firefox. Profile Manager?

所有回覆 (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Create a new profile as a test to check if your current profile is causing the problems.

See "Basic Troubleshooting: Make a new profile":

If that new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.

See: