windows secure desktop

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The Windows secure desktop is a protected environment used during boot, initial sign-in, and Ctrl+Alt+Delete. Unlike the standard lock screen accessed via Windows key + L, the secure desktop may display a clock that lags up to 30 seconds behind the actual time. Microsoft confirms this behavior is by design, as the screen refreshes on a fixed interval that can drift from the minute boundary. This distinction between the secure desktop and the user-session lock screen is important for troubleshooting perceived clock delays. The secure desktop ensures system integrity during sensitive operations, but its display refresh rate can cause minor time discrepancies.
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    Secure Lock screen clock can lag up to 30 seconds—Microsoft says it’s by design

    Windows users are being told not to treat a lagging lock-screen clock as a bug at all: Microsoft says the Secure Lock screen can display time that is up to 30 seconds behind the real minute, and that behavior is by design. The oddity only affects the secure desktop path used during boot, initial...
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