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FireFox Won't Launch

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  • Lêste antwurd fan AliceWyman

18mathiasg
18mathiasg
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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.

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.

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Paul
Paul
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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.

  1. 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.
  2. In that text field, type %APPDATA% and press Enter. An explorer window should open.
  3. From that explorer window, double-click on the Mozilla folder, then double-click on Firefox and then on Crash reports. Double-click on submitted.
  4. 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.
  5. Open the most recent 5 files with a text editor and copy the IDs.
  6. 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.

AliceWyman
AliceWyman
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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