Product Firefox Release Channel release Version 54.0.1 Build ID 20170628075643 OS Windows 10 OS Version 10.0.15063 bp-59a7caee-69ae-4850-bddf-9cb991170717 Signature: cmdshim32.dll@0x135b ---------------------- cmdshim32.dll = COMODO Internet Security 29 Jun 17 This reported issue is caused by incompatibility with Microsoft Windows update KB4022716. Comodo teams is working over the fix. Dates of the Hotfix releases will be published later this week. Till that Hotfixes we strongly recommend users to not install mentioned Windows update KB4022716. comodo is providing fixes - please see: https://forums.comodo.com/news-announcements-feedback-cis/please-read-before-updating-to-microsoft-update-kb4022716os-build-15063447-t119928.0.html;msg861691#msg861691

See also: *https://support.mozilla.org/en-US/kb/firefox-crashes-startup-comodo-win10-update ---- *[https://bugzilla.mozilla.org/show_bug.cgi?id=1376831 bug 1376831] - Startup crash in cmdshim32.dll@0x135b (Comodo, Windows 10) (<i>please do not comment in bug reports<br>https://bugzilla.mozilla.org/page.cgi?id=etiquette.html</i>)