This policy setting determines whether notifications are displayed on an RD Session Host server when there are problems with RD Licensing that affect the RD Session Host server.By default notifications are displayed on an RD Session Host server after you log on as a local administrator if there are problems with RD Licensing that affect the RD Session Host server. If applicable a notification will also be displayed that notes the number of days until the licensing grace period for the RD Session Host server will expire.If you enable this policy setting these notifications will not be displayed on the RD Session Host server.If you disable or do not configure this policy setting these notifications will be displayed on the RD Session Host server after you log on as a local administrator.
Windows Components\Remote Desktop Services\Remote Desktop Session Host\Licensing
Machine
At least Windows Server 2003 with Service Pack 1
HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services!fDisableTerminalServerTooltip
TerminalServer.admx