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FireFox won't start

  • 2 replies
  • 1 has this problem
  • 4 views
  • Last reply by cor-el

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My husband, Wayne, a casual computer user, has been having trouble getting into Firefox for some time. He's been getting along on MS Edge since then. He wants to get back to Firefox for his bookmarks that are there. His problem is that Firefox doesn't start. When he tries to start it, a gray window appears briefly with a rotating blue circle and then disappears in less than a minute. While it's up, Firefox shows up in Task Manager with "not responding" or "suspended" or nothing. I note that the last Firefox update was 6/14/2022 according to the date modified on the file in Crash Reports, InstallTime2022060832. This is about the time he began having problems.

During the brief time it's up, there is no menu button (3 short lines), so Refreshing or Troubleshooting are not options. I believe my only option is to Uninstall (without removing user data) and then reinstall Firefox, ie a "Clean Install". I see an option to Refresh during the Uninstall dialog. Might that work? Barbara

My husband, Wayne, a casual computer user, has been having trouble getting into Firefox for some time. He's been getting along on MS Edge since then. He wants to get back to Firefox for his bookmarks that are there. His problem is that Firefox doesn't start. When he tries to start it, a gray window appears briefly with a rotating blue circle and then disappears in less than a minute. While it's up, Firefox shows up in Task Manager with "not responding" or "suspended" or nothing. I note that the last Firefox update was 6/14/2022 according to the date modified on the file in Crash Reports, InstallTime2022060832. This is about the time he began having problems. During the brief time it's up, there is no menu button (3 short lines), so Refreshing or Troubleshooting are not options. I believe my only option is to Uninstall (without removing user data) and then reinstall Firefox, ie a "Clean Install". I see an option to Refresh during the Uninstall dialog. Might that work? Barbara

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Did he try in Private Mode as well?

Helpful?

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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.

Try to start Firefox in Troubleshoot Mode to see if that works.

  • Windows: hold down the Shift key while starting Firefox
  • Mac: hold down the Options key while starting Firefox

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