How to block date/time changes on WEC7?

Technical Support
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1

We need to prevent the user from modifying the date and time of the device.

First I tried deactivating the explorer.exe, but strangely when doing this the RAM used grew exponentially, then after approximately 1 day a memory leak occurred and the device stopped working. What could cause this?

Is there any registry I can add or modify to block changes in the time and date?

Thanks for your help

2

1.3b4 BSP is very old and not supported. Could you please update to latest one (1.6)?
Disabling explorer should no cause a memory leak unless your app has some unproperly handled dependency. Have you disable explorer as described here?

3

yes, I deactivated the explorer.exe by following those instructions.

Is there any way to block date/time changes without deactivating the explorer?

I ask this because it would be very complicated to update the bsp, we would have to do it in about 500 devices that are already installed

4

Dear @RamonM

There’s no way to block changing the time. If a user has access to explorer he has full access to the system and can run whatever application he wants. Even if there would be a setting to block the time change, the user could easily revert it.

What you can try:

  • Synchronize the time from an external reasonably trusted source on a regular base, e.g. querying the internet time once a minute and set the system time to that value.
  • Make your application window large enough to cover the task bar, and mark it as “always on top”
  • There might be ways to autohide the taskbar in a way to not show up again when you move the mouse to the screen edge. (Find the window handle of the taskbar and change its properties). However, I never tried that.

Regards, Andy