You receive the below message when attempting to Remote Desktop onto your server or servers.

The grace period for the Remote Desktop Session Host server  has expired

You have configured a license server and inputted a new license key but still unable to remote desktop.

Resolution:

Assign the license server via Group Policy:

1) Launch Group Policy and locate the policy you wish to amend
2) Browse to Computer Configuration\Administrative Templates\Windows Components\Remote Desktop Services\Remote Desktop Session Host\Licensing
3) Define the settings as below

• Use the specified Remote Desktop License Server
• Set the Remote Desktop Licensing mode