Hello, please follow "all instructions" in this URL https://support.mozilla.org/en-US/kb/firefox-crashes-troubleshoot-prevent-and-get-help Pay attention to your Extensions/Addons, if not up to date update or disable them. See how it goes after following instructions. Please update Firefox if not already to ESR ver 52.4.0 From Help --> About or https://www.mozilla.org/en-US/firefox/organizations/all/ Please let us know if this solved your issue or if need further assistance.