Ok, I got it. Since Horizon 2103 this feature is based on "Chrome Cast". In our company this function is disabled by GPO, so I didn't saw the popup to enable the second monitor. In the older Horizon...
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Ok, I got it. Since Horizon 2103 this feature is based on "Chrome Cast". In our company this function is disabled by GPO, so I didn't saw the popup to enable the second monitor. In the older Horizon version it wasn't dependent on this function.