FireFox Won't Launch
I recently tried downloading Firefox from Microsoft Edge and after going through the installer the shortcuts and icons appeared but they wouldn't open Firefox or would open it for a millisecond and then immediately close out. I then tried to download it from the Microsoft Store which initially worked but after a few hours it closed and it reverted back to not opening.
All Replies (2)
We're sorry to hear that your Firefox seems to be crashing when you open it. Please perform the following steps to give us a crash report ID that helps us find out more about the cause of the crash.
- On the keyboard, press [Windows] The image "Windows key" does not exist. + [R]. This should bring up a Run window that contains a text field.
- In that text field, type %APPDATA% and press Enter. An explorer window should open.
- From that explorer window, double-click on the Mozilla folder, then double-click on Firefox and then on Crash reports. Double-click on submitted.
- Now, you should see a list of files that contain reports. Go to View > Arrange Icons by > Modified to get the most recent files at the top of the window.
- Open the most recent 5 files with a text editor and copy the IDs.
- Paste each ID with bp- into the reply window on the forums.
Thanks in advance!
You can find more information and troubleshooting steps in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.
If you can't find any recently-submitted crash reports, then this article has some suggestions that may help: Firefox won't start - find solutions
You can also try the suggestion posted by cor-el in this question, which seems similar to yours: https://support.mozilla.org/en-US/questions/1383706 Fire Fox won't start and I can't trouble shoot it