Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Firefox stopped working. The process runs, but it doesn't actually open a window.

  • 1 reply
  • 1 has this problem
  • 3 views
  • Last reply by Shadow110

PaulWelke
PaulWelke
more options

My computer crashed a few times yesterday. I got it back up and running, but when I try to open Firefox, nothing happens, meaning that a window doesn't open.

Firefox is still running in my Task Manager.

I tried uninstalling and reinstalling and it still doesn't work.

My computer crashed a few times yesterday. I got it back up and running, but when I try to open Firefox, nothing happens, meaning that a window doesn't open. Firefox is still running in my Task Manager. I tried uninstalling and reinstalling and it still doesn't work.

All Replies (1)

Shadow110
Shadow110
more options

Please consider sending info to Mozilla, this can be enabled within Firefox before posting.

No....info is not useful.

There are several malware and bitcoin miners that will not let you close Firefox. Force Close it from the Task Manager or reboot.

Please use more than 1 scanner as each uses diff tech : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware Save your Report and google each before deleting anything as do not want to delete something you need, If need help : https://forums.malwarebytes.com/topic/9573-im-infected-what-do-i-do-now/ Post in only 1 forum, then wait.

Can also : uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files and C:\Program Files(x86) Then restart system. Then run Windows Disk Cleanup. (Note: this should be Pinned and run weekly, if never done below expect 10's of gigs) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do : https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer

Reinstall with Current Release Firefox 57.0.2 with a Full Version Installer https://www.mozilla.org/firefox/all/

Flash Player Version: 28.0.0.126 Current Version this date. https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, . . . .) Note: Other software is offered in the download. <Windows Only>

Please let us know if this solved your issue or if need further assistance.