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!

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 4 won't open on my Mac; says it's not compatible with my system (Mac OS4)

Scallegretto
Scallegretto
more options

I read the system requirements for Firefox 4. My mac should be compatible. I had Firefox 3.6? on my mac. Am running Mac OS 10.4.11. I downloaded Firefox 4; when I tried to install, it said there was a "newer" version of the software on my machine (but it is/was version 3.6) and asked if I still wanted to proceed. I said yes, thinking Version 4 would replace 3.6. Well, it did this. Now, Firefox is in my apps folder, but the icon has a / sign across it and the app won't open up. Just says it cannot open because it is not supported on this system.... Now what do I do? I can't go back to the 3.6 version because I can't find a version of it to download and I can't open 4. Help! How do I get Firefox back on my computer?

I read the system requirements for Firefox 4. My mac should be compatible. I had Firefox 3.6? on my mac. Am running Mac OS 10.4.11. I downloaded Firefox 4; when I tried to install, it said there was a "newer" version of the software on my machine (but it is/was version 3.6) and asked if I still wanted to proceed. I said yes, thinking Version 4 would replace 3.6. Well, it did this. Now, Firefox is in my apps folder, but the icon has a / sign across it and the app won't open up. Just says it cannot open because it is not supported on this system.... Now what do I do? I can't go back to the 3.6 version because I can't find a version of it to download and I can't open 4. Help! How do I get Firefox back on my computer?

所有回覆 (3)

the-edmeister
the-edmeister
  • Moderator
more options

4.0 needs 10.5 and an Intel processor.
http://www.mozilla.com/en-US/firefox/4.0/system-requirements/

For older Macs that aren't supported in Firefox 4.0, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/

Linda
Linda
more options

I had this problem too. Just do a google search for firefox 3.6 and download, worked for me with no loss of bookmarks or history. Mozilla should have the requirements posted right next to the download link, so there can be no mistakes and if there is it should warn you that this version will not work on your computer

Scallegretto
Scallegretto 提出問題者
more options

Thanks, Lindis -- I was able to bring back 3.6 and it works fine. I agree with you, the system requirements should be posted right next to the download link or at least a link to the system requirements. I couldn't find the system requirements through a link anywhere except on the Firefox Yahoo site, where it said that 4 would work with OS 10.4xx. I now see that somewhere on the Firefox site, there is a system requirements page, but it isn't referenced anywhere on the home page where the 4 download link is and I'm not sure how you get to it. But... I don't need it now, thanks to your input!