We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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。

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 tried to download the Firefox Add on Web Developer and I got an error message and I don't know how to proceed.

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

more options

Hi I have Firefox 3.0.1 and then it also says Mozilla 5.0. So first I don't even know if this is the right product but I didn't know what else to do.

I'm trying to I tried to download the Firefox Add on Web Developer and I got an error message of: Firefox could not install the file at http://releases.mozilla.org/pub/mozilla.org/addons/60/web_developer-1.1.9-fx+sm.xpi because: Unexpected installation error Review the Error Console log for more details. -203

I've tried it like 3-4 times. I don't know what I'm doing wrong. Any suggestions???

THANK YOU :-) Erin

Hi I have Firefox 3.0.1 and then it also says Mozilla 5.0. So first I don't even know if this is the right product but I didn't know what else to do. I'm trying to I tried to download the Firefox Add on Web Developer and I got an error message of: Firefox could not install the file at http://releases.mozilla.org/pub/mozilla.org/addons/60/web_developer-1.1.9-fx+sm.xpi because: Unexpected installation error Review the Error Console log for more details. -203 I've tried it like 3-4 times. I don't know what I'm doing wrong. Any suggestions??? THANK YOU :-) Erin

所有回覆 (1)

more options