Issue

You have downloaded and installed a new Windows IoT 10 snapshot, but the activation could not be restored. As a result, your Windows desktop shows a watermark and a message stating that Windows is not activated.

Solution

1. In the Windows taskbar, right-click  and select Activate Windows.
   If the write filter is enabled, an appropriate message comes up.
2. If the write filter is enabled, open the Setup, go to System > Unified Write Filter and deactivate Enable UWF.
3. Restart the thin client.
4. Select Activate Windows.
5. Restart the thin client again.
6. Select Activate Windows again.
   The activation should be successful. If not, you can try to restart the thin client and select Activate Windows  once again.