How to fix RDS 2012r2 error: "Licensing mode for the Remote Desktop Session Host is not configured."

Solution

To fix the problem, run the following commands in powershell to set the licensing server properly on the rd session host using the WMI CIM provider:

$obj = gwmi -namespace "Root/CIMV2/TerminalServices" Win32_TerminalServiceSetting $obj. SetSpecifiedLicenseServerList("licserver.domain.local") Then, go into the registry and manually set the licensing mode: HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core\LicensingMode You need to change the DWORD to 2 for Per Device or 4 for Per User.

Next, reboot the system. The changes made previously will report everything properly and the RDS host will now recognize the licensing configuration.

Unable to increase resolution to 2560 X1600

Issue: Unable to increase resolution to 2560 X1600

Cause: Less video memory configured in the virtual machine

Resolution:
1. Edit the vm configuration from vCenter,
2. Click on video memory calculator to check required video memory.
3. For 2560x1600 resolution you need to set 16MB video memory, it won’t be list in video memory calculator