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Adding a printer on a Windows 10 IoT / Windows Embedded Thin Client

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Various Issues When Thin Clients Wakes After Longer Period in Sleep Mode

Environment: IGEL Windows 10 IoT 4.02.100

Issue

When the thin client wakes after a longer period of time in sleep mode, e. g. over the weekend, various anomalies are experienced.

Examples include:

Cause

The problem is caused by the combined use of the Unified Write Filter (UWF) and Windows Defender. As of Windows 10 IoT 4.02.100, Windows Defender antimalware definition updates are enabled by default. At the same time, it is normal behavior of the UWF that the overlay will grow no matter a path is excluded from the UWF. When Windows Defender definition updates are executed, the overlay usage grows to about a few hundred megabytes. This causes excess memory consumption, which results in the described anomalies.

You can learn more in the chapter Unified Write Filter (UWF).

Solution

The recommended solution is to configure Windows Defender for scheduled definition updates with IGEL Setup, see Windows Defender. In schedule mode, the UWF is automatically deactivated during definition updates.

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