How to Find out Windows Downtime, Uptime and Last Shutdown Time on Windows 11

您可以使用事件查看器、命令提示符、任務管理器找出 Windows 系統停機時間和上次關機時間，了解如何操作。

Every shutdown and restart your Windows 11 PC performs is recorded somewhere — and knowing where to look can turn an annoying mystery reboot into a solvable troubleshooting task or a clear audit trail.

Windows 上，开关机时间对用户体验影响非常大。 获取到每次开机总时间和阶段耗时，有利于我们了解系统瓶颈，方便后续进行改善。 借助于 Windows 强大的诊断能力，Windows 自身借助 ETW 就已经统计了开关机的时间，这样我们获取开关机时间就非常简单了。

You can use Event Viewer to view the date, time, and user details of all shutdown events caused by a shut down (power off) or restart. The event ID's below will show you these details.

The Event Viewer is a built-in Windows utility that lets you view various events logged by Windows. As I already mentioned, Windows logs the last shutdown and start-up time, and it can be found in Event Viewer. Follow these steps to find out the last time

Windows 11 provides detailed event logs that can help you pinpoint the exact time and reason your system was started or shut down. Here's a step-by-step guide on how to access these logs.