You may want to try restarting Windows. Then open Firefox.

C:\Program Files (x86)\Mozilla Firefox

C:\Program Files (x86)\OldFirefox

C:\Program Files\Mozilla Firefox

C:\Program Files\OldFirefox

Sorry to hear about the crashes, and thank you for the report. That crash is happening so early that I don't recognize what Firefox is trying to do. Possibly the program files have become damaged. If the problem persists after restarting Windows, could you try: '''Clean Reinstall''' We use this name, but it's not about removing your settings, it's about making sure the program files are clean (no inconsistent or alien code files). As described below, this process does not disturb your existing settings. Do NOT uninstall Firefox, that's not needed. (A) Download a fresh installer for Firefox 44.0.2 from https://www.mozilla.org/firefox/all/ to a convenient location. (Scroll down to your preferred language.) '''''Note: For broadest compatibility, choose the 32-bit version.''''' (B) Exit out of Firefox (if applicable). (C) Rename the program folder as follows: ''(32-bit Firefox on 64-bit Windows)'' C:\Program Files (x86)\Mozilla Firefox to C:\Program Files (x86)\OldFirefox ''(Other versions)'' C:\Program Files\Mozilla Firefox to C:\Program Files\OldFirefox (D) Run the installer you downloaded in step (A). It should automatically connect to your existing settings. Can a cleanly reinstalled Firefox start up in a language that works better for you? Note: Some plugins may exist only in that OldFirefox folder. If something essential is missing, look in these folders: * \OldFirefox\Plugins * \OldFirefox\browser\plugins