Answer Description
Event Viewer ( or eventvwr.msc, eventvwr.exe) is a great place to start when troubleshooting application failures. Applications and components of the Windows itself will log events to Event Viewer so they can be reviewed. This may includes information about the application running like configuration details, warning messages and error messages.
Wikipedia
Event Viewer is a component of Microsoft's Windows NT operating system that lets administrators and users view the event logs on a local or remote machine Applications and operating-system components can use this centralized log service to report events that have taken place, such as a failure to start a component or to complete an action In Windows Vista, Microsoft overhauled the event systemDue to the Event Viewer's routine reporting of minor start-up and processing errors (which do not, in fact, harm or damage the computer), the software is frequently used by technical support scammers to trick the victim into thinking that their computer contains critical errors requiring immediate technical support
Event_Viewer - Wikipedia, the free encyclopedia