Windows Server 2016 error Message "Online - Windows PowerShell not installed"

[Michael_IT 0]

Dear Community, 

I have a the following problem with our Windows Server 2016 Standard:

In the Server Manager under Remote Desktop Services it is stated in the column Manageability  "Online - Windows PowerShell not installed".  

This error also hinders the installation of Remote Desktop Services which I require actually rather urgently.

However, PowerShell is installed and works very well, I could not find any means for reinstalling / repairing Windows Power Shell.

The use of the measure recommended for Windows Server 2012 (Install-WindowsFeature -Name PowerShell –ComputerName [name])  did not work.

Would you please suggest any helpful means? 

Thank you very much for your help. 

Best regards, Michael