Window10 IOT system time and UEFI BIOS time synchronization issue

Tian, Brean 0 Reputation points

Is it possible for the WIN10 IOT system to provide some sort of configuration that accomplishes the following functions?

  1. WIN10 IOT automatically loads the UEFI BIOS time every time it is automatically booted and overwrites WIN10's system time, even if the BIOS time is earlier than the system time
  2. Allow WIN10 to automatically refresh the UEFI BIOS time only when accessing an external network
Windows for IoT
Windows for IoT
A family of Microsoft operating systems designed for use in Internet of Things (IoT) devices.
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  1. Sean Liming 4,511 Reputation points

    To the first question, you can uncheck to the "Synchronize with an Internet time server" so Windows uses the BIOS clock time. There was an old answer about setting the BIOS to UTC time when using a write filter, but I cannot seem to find it at the moment.

    The second question is something you will have to develop. Since internet time sync is off, you will have to create a service that detects internet / intranet connection to get the time and update the BIOS clock.

    Are you looking to connect to a different time source on the network?

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