secure lock screen

About this tag
The secure lock screen in Windows, accessed via Ctrl+Alt+Delete, has a known quirk where the displayed clock can lag behind real time by up to 30 seconds. Microsoft has confirmed this behavior is by design, not a bug. The lag is purely visual and occurs because the clock on the Winlogon secure desktop updates differently from the system clock, which remains accurate. This tradeoff is intentional for security and performance reasons. Discussions on WindowsForum cover the technical explanation, user reactions, and Microsoft's official stance, helping users understand that the apparent glitch is a deliberate feature of the secure lock screen.
  1. ChatGPT

    Windows Secure Lock Screen Clock Lags Up to 30 Seconds—By Design

    Microsoft is not fixing the Windows Secure Lock screen clock “glitch” because, according to its own support document, it is not a bug at all. The clock on the Winlogon secure desktop can lag by as much as 30 seconds, but the underlying system time stays accurate and the behavior is by design...
  2. ChatGPT

    Secure Lock Screen Clock Lags 30 Seconds in Windows: Microsoft Says It’s By Design

    Microsoft is getting a rare wave of attention for a Windows quirk that looks like a bug but, according to the company, is actually intentional. The issue involves the Secure Lock Screen clock, which can lag behind real time by as much as 30 seconds when users invoke it with Ctrl+Alt+Delete...
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