This policy setting specifies whether Remote Desktop Services retains a user's per-session temporary folders at logoff. The recommended state for this setting is: Disabled. Rationale: Sensitive information could be contained inside the temporary folders and visible to other administrators that log into the system. Impact: None - this is the default behavior.
Solution
To establish the recommended configuration via GP, set the following UI path to Disabled: Computer Configuration\Policies\Administrative Templates\Windows Components\Remote Desktop Services\Remote Desktop Session Host\Temporary Folders\Do not delete temp folders upon exit Note: This Group Policy path is provided by the Group Policy template TerminalServer.admx/adml that is included with all versions of the Microsoft Windows Administrative Templates. Note #2: In older Microsoft Windows Administrative Templates, this setting was named Do not delete temp folder upon exit, but it was renamed starting with the Windows 8.0 & Server 2012 (non-R2) Administrative Templates. Default Value: Disabled. (Temporary folders are deleted when a user logs off.)