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

How to set Firefox 64 bit as default browser, when both 32 bit and 64 bit is installed.

  • 4 回覆
  • 1 有這個問題
  • 20 次檢視
  • 最近回覆由 FredMcD

more options

I have both Firefox 32 bit and Firefox 64 bit installed in my Win 10 system. I want to set Firefox 64 bit as default browser for the system, but the option for the same is not available in the Default Apps of Windows 10. It sets the 32 bit version as the default browser, which doesn't open when 64 bit Firefox is open.

Can someone help me set Firefox 64 bit as default browser?

I have both Firefox 32 bit and Firefox 64 bit installed in my Win 10 system. I want to set Firefox 64 bit as default browser for the system, but the option for the same is not available in the Default Apps of Windows 10. It sets the 32 bit version as the default browser, which doesn't open when 64 bit Firefox is open. Can someone help me set Firefox 64 bit as default browser?

所有回覆 (4)

more options
more options

Due to some reason when I opened FF 32bit, the shortcut to FF 64bit became non functional.

I tried directly opening the FF 64bit and all my user data went off.

I uninstalled FF 32bit by going into the installed location and running the uninstaller.

Installed the FF 64bit again. Now the only issue was my user data had gone. I restored it by copy the profile data inside the AppData folder in the system user directory.

Good thing FF doesn't delete that folder.

more options

FredMcD said

See if these help; https://support.mozilla.org/en-US/questions/1207775 https://support.mozilla.org/en-US/questions/1208759#answer-1086882 https://support.mozilla.org/en-US/kb/how-change-your-default-browser-windows-10 https://www.bing.com/search?q=change+default+browser+windows+10&pc=MOZI&form=MOZSBR

All of these solutions tell to go to settings and change there. Funny thing is the FF 64bit was not coming as installed for some reason. I think an update to FF 32bit broke FF 64bit installation.

I have sorted the issue by reinstalling. Thanks for the help.

But I would recommend people not to user FF 32bit and FF64bit simultaneously as it will cause issues like this.

more options

That was very good work. Well done. Please flag your https://support.mozilla.org/en-US/questions/1260731#answer-1228073 post as Solved Problem so others will know.

There is a way to have more than one version of Firefox running. Each, however, requires its own profile and programs folder.