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

Unable to open Firefox

  • 2 回覆
  • 0 有這個問題
  • 13 次檢視
  • 最近回覆由 Jan

more options

Suddenly on Friday afternoon I could no longer log in to Firefox (or any of the 365 Office products) - almost like permissions were somehow changed. Some of my software works just fine. I downloaded and installed Firefox again; same for 365 Office and Windows 11. I ran all the repairs I could find in Windows and on the Internet. Now I can get into the various 365 Office products but only by running as administrator (right click and choose Run as Admin) - the clicking on icons does not work. I still cannot open Firefox. The other thing is that I can open MS Edge just fine just by clicking on the icon (what I'm using here) only I really don't want to use it. Does anyone have any ideas? Thanks! Jan Mogensen

Suddenly on Friday afternoon I could no longer log in to Firefox (or any of the 365 Office products) - almost like permissions were somehow changed. Some of my software works just fine. I downloaded and installed Firefox again; same for 365 Office and Windows 11. I ran all the repairs I could find in Windows and on the Internet. Now I can get into the various 365 Office products but only by running as administrator (right click and choose Run as Admin) - the clicking on icons does not work. I still cannot open Firefox. The other thing is that I can open MS Edge just fine just by clicking on the icon (what I'm using here) only I really don't want to use it. Does anyone have any ideas? Thanks! Jan Mogensen

所有回覆 (2)

more options

Did you recently uninstall an application that was using Visual C+ runtime components?

You can check for issues caused by a corrupted or incomplete Visual C++ installation that is missing runtime components (Redistributable Packages) required by Firefox, especially VCRUNTIME140_1.dll.

See "Visual Studio 2015, 2017, 2019, and 2022":

You may also have to install the Visual Studio 2013 Redistributable Package. You need to reboot the computer.


more options

Hi cor-el: Thanks for your reply and I'm fairly certain I did just as you say: I clicked on the uninstall that deleted Visual C+ files. I followed the links you provided but unfortunately, I'm not sure how to install these files so they can be used. Maybe you can help with this? Thanks!! Jan