What is causing this?
I cannot add from the server manager - it tells us we need to restart but we have tried that.
Powershell gives this:
Windows PowerShell
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PS C:\Windows\system32> import-module RemoteDesktop
PS C:\Windows\system32> Add-WindowsFeature -Name RDS-ConnectionBroker
Add-WindowsFeature : The given key was not present in the dictionary.
At line:1 char:1
+ Add-WindowsFeature -Name RDS-ConnectionBroker
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [Install-WindowsFeature], KeyNotFoundException
+ FullyQualifiedErrorId : System.Collections.Generic.KeyNotFoundException,Microsoft.Windows.ServerManager.Commands
.AddWindowsFeatureCommand
PS C:\Windows\system32>