This is possibly a problem with "Websense Endpoint" software. Websense states that it only supports the Firefox ESR version, so you can consider to switch to that version if that is possible. You can try to disable or uninstall this software for now until there is an update that addresses this issue, so check for such an update. You can contact Websense for support. Firefox 45.2.0 ESR: *https://www.mozilla.org/en-US/firefox/organizations/all/ *https://www.mozilla.org/en-US/firefox/organizations/notes/ *https://www.mozilla.org/en-US/firefox/organizations/system-requirements/ ----- *[https://bugzilla.mozilla.org/show_bug.cgi?id=1181091 bug 1181091] - Firefox 40 crashes on startup [@ @0x0 | ScopedXPCOMStartup::~ScopedXPCOMStartup() ] with Websense Endpoint

Are you using "Websense Endpoint"?

Product Firefox Version 47.0 Build ID 20160604131506 Release Channel release OS Windows 7 OS Version 6.1.7601 Service Pack 1 Signature @0x0 | CallGetService atidxx32.dll = Advanced Micro Devices = '''Check this link;'''<br>http://support.amd.com/en-us/download/desktop?os=Windows+7+-+64