Try setting the connection settings to "No proxy". You can find the connection settings in "Tools > Options > Advanced : Network : Connection" Please send you crash reports to Firefox team. Support link can be helpful: [https://support.mozilla.com/en-US/kb/Firefox%20crashes%20when%20you%20open%20it Crash Support] Lastly, if nothing works, you can try to reinstall Firefox. Don't forget to export you bookmarks and saved data before you uninstall current version.

Thank you so much deimo, now my Firefox does not crashed anymore