From: winstonmvp@gmail.com   
      
   John C. wrote on 12/1/2025 5:35 AM:   
   > Lately, I've been noticing an ongoing slowing down of Windows 10 on my   
   > computer. First it was getting the Desktop toolbar I use from the   
   > Taskbar, then it was the Start Menu itself (I use Open Shell) opening,   
   > and now it's startup times for several programs that I use.   
   >   
   > After extensive discussion with Copilot, we narrowed it down to   
   > KB5068781, which applied kernel level security fixes and Secure Boot   
   > certificate updates. This could introduce extra checks during executable   
   > startup.   
   >   
   > Anybody else noticed this?   
   >   
   > TIA   
   >   
      
   Nothing(slowing down) noticeable on Win10 22H2 on two devices(Desktop and   
   Surface 3 tablet).   
      
   Fyi...the security update for secure boot in KB5068781 was specific and   
   only for smart card(no SDCX or SD media cards). Very limited, and unless   
   your device is capable of reading smart card(credit card size card with   
   embedded chip) and contains smart card software or app, it is unlikely a   
   Secure Boot update is related to a slow-down.   
      
      
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