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Microsoft explains why restarting Windows can shut it down more completely than actually shutting it down

Summary by Windows Latest
Fast Startup saves your PC's kernel session to hiberfil.sys every time you shut down, so stuck drivers and corrupted services can survive a shutdown and come right back. Restart wipes that session for good. Here's what actually happens in each case, plus the command to force a true full shutdown.
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According to Microsoft documentation, Windows 10 and 11 secure kernels and drivers in the hiberfil.sys when shutting down, provided that the active quick start is active by default. Therefore, the restart is more thorough in case of persistent errors.

You think the "Shut Down" option shuts down Windows? Nothing could be further from the truth.

In Windows 11, the Fast Startup feature prevents the system from restarting from scratch after clicking "Shutdown." The kernel session is placed in a hibernation file, and a full refresh is only achieved by "Restarting."

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Windows Latest broke the news on Friday, September 18, 2026.
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