Blank screen appears while accessing TS sesstion

Appears blank screen after accessing RDP session on TS server.

server details : Windows server 2012 R2.

-- Accessing directly MSTSC sessions from desktop.

-- Intermediate issue only for few users.

suspected event:

Log Name:      Microsoft-Windows-RemoteDesktopServices-SessionServices/Operational
Source:        Microsoft-Windows-RemoteDesktopServices-SessionServices
Date:          6/10/2016 10:36:48 AM
Event ID:      2
Task Category: Display control
Level:         Error
Keywords:      
User:          WCCGB\HFrederick
Computer:      *****.***.edu
Description:
The RDP display control module failed to change the session monitor layout. The operation failed with error code 0xFFFFFFFF.
Event Xml:

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Thanks, Sajjan T