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Firefox crashes randomly for no reasen because an unknown application has asked to terminate it in an unusual way, why?

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  • 9 have this problem
  • Last reply by Shawn

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WTF Firefox is closed by some unknown application and it looses all the tabs that were not saved previously.

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Can you provide me with your Crash ID? This can help me find the cause of your crash.

Inside Firefox -

Outside Firefox -

Crash troubleshooting


One of your add-ons might be the culprit. Try running Firefox in Diagnose Firefox issues using Troubleshoot Mode with all add-ons disabled. If that solves the problem, see Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and possibly Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems

Are your plugins updated? Check this by going to

Are you using the newest version of Firefox?

It is important you use the latest version of Firefox because it includes stability and security updates. The latest version of Firefox can always be downloaded from You can check if you are using the latest version of Firefox by going to Help | About Mozilla Firefox. If you are not, see Update Firefox to the latest release


Different types of Malware can cause Firefox to crash. For more information, please see Troubleshoot Firefox issues caused by malware