When you try to connect to a remote computer that is running Windows Server 2003 or Windows XP SP3 through Remote Desktop Protocol (RDP), the connection may not be created and you receive the following error message:
Event Type: Information
Event Source: Application Popup
Event Category: None
Event ID: 26
Application popup: : \SystemRoot\System32\RDPDD.dll failed to load
To alleviate the issue, increase the size of the session image space by modifying this registry key.
Note: This change requires a reboot.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
Where 00000020 is hex for 32
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Article ID: 2511009 - Last Review: Apr 29, 2011 - Revision: 1