This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

The application hasn't identfied itself

more options

I'm unable to start or to reinstall / reset firefox. It doens't matter what action I do, I allways get the same crash report.

A rough translation of my problem is: - The application encoutered a problem and freezed - Unfortunately the crashreporter wasn't able to send a report about this crash - Details: The application hasn't identified itself.

The only thing I can do is to click on the OK button... (Sorry for the bad enlish)

I'm unable to start or to reinstall / reset firefox. It doens't matter what action I do, I allways get the same crash report. A rough translation of my problem is: - The application encoutered a problem and freezed - Unfortunately the crashreporter wasn't able to send a report about this crash - Details: The application hasn't identified itself. The only thing I can do is to click on the OK button... (Sorry for the bad enlish)

All Replies (3)

more options

Sorry the picture wasn't uploaded with the first post

more options

Try a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.

If possible uninstall your current Firefox version to cleanup the Windows registry and settings in security software.

  • Do NOT remove "personal data" when you uninstall your current Firefox version, because this will remove all profile folders and you lose personal data like bookmarks and passwords including data in profiles created by other Firefox versions.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

  • (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
  • (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure NOT to remove personal data when you uninstall Firefox as that will remove all Firefox profile folders and you lose your personal data.

If you keep having problems then also create a new profile.


more options

I uninstalled and deleted everything I could find about Mozzila Firefox. I was able to launch the setup and succesfully install the browser (according the the install wizard). But then when I start the browser the same error occured.