In some cases, QuickBooks Desktop runs into an error where running the QB Desktop app gives an error message “QuickBooks has Stopped Working” with Problem Event Name: BEX. This error is also recognized as a BEX error in QuickBooks and can appear in any version of the Windows operating system. BEX error does not mainly appears in QuickBooks but also affects other Windows applications like Microsoft Outlook, Mozilla Firefox, Internet Explorer and various other applications. After investigating the error, we have found some troubleshooting steps suggested by Microsoft and Intuit for a quick solution. Follow the complete article to learn more about this error and its troubleshooting method.