To enable viewing of the clock in the taskbar for clients connecting to a Windows Terminal Server, this can be achieved through the use of a group policy registry setting.
On a Windows Server 2008 R2 DC, open Group Policy Management and edit your group policy. The location can be found here:
User Configuration > Preferences > Windows Settings > Registry
Registry Key Path
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\StuckRects2
Value Type
REG_BINARY
Value Data
28000000FFFFFFFF06000000030000003C0000001E000000FEFFFFFFFE030000920600001C040000
This article applies to clients running Server 2000 and Server 2003 only. The clock is displayed by default for Remote Desktop clients on Server 2008 and up.